Pub Date : 2022-01-17DOI: 10.1163/22238980-bja10051
B. Mathpal, P. Srivastava, S. P. Pachauri, A. Shukla, N. Pant, S. C. Shankhdhar
A pot experiment was carried out to evaluate the impact of plant growth regulators (PGRs) on translocation and accumulation of zinc (Zn) in grains of four wheat varieties of varying Zn sensitivities. Different concentrations of two (gibberellic acid and cytokinin) PGRs viz., control, 10 ppm gibberellic acid (GA), 20 ppm gibberellic acid (GA), 10 ppm cytokinin (kinetin), 20 ppm cytokinin (kinetin), 10 ppm gibberellic acid (GA) + cytokinin (kinetin), 20 ppm gibberellic acid (GA) + cytokinin (kinetin) were applied under different Zn regimes (control), soil application of 5 mg Zn kg-1 soil and soil application of 5 mg Zn kg-1 soil + foliar applications of 0.5% ZnSO4.7H2O + 0.25% lime). Four contrasting wheat varieties i.e., UP262 & PBW175 (Zn inefficient), UP2628 & UP2554 (Zn efficient); were tested for enzyme activities, yield attributes and Zn content in various plant parts. Regarding influence of PGR levels, the maximum CA and SOD activities were recorded under 20 ppm GA and control respectively. The grain yield, straw yield and grain Zn content was found to be the maximum under 10 ppm GA+cytokinin, 20 ppm GA and 20 ppm cytokinin respectively. Among all the methods used, soil along with foliar spray (Zn S+F) was found to be the most effective in improving all the crop parameters. Among varieties, the efficient sets of varieties (UP2628 & UP2554) performed better than Zn inefficient varieties. The use of plant growth regulators along with efficient delivery method could enhance the transport and accumulation of Zn in grains of wheat.
{"title":"Enhancing translocation and remobilization of zinc in wheat by the application of plant growth regulators","authors":"B. Mathpal, P. Srivastava, S. P. Pachauri, A. Shukla, N. Pant, S. C. Shankhdhar","doi":"10.1163/22238980-bja10051","DOIUrl":"https://doi.org/10.1163/22238980-bja10051","url":null,"abstract":"\u0000A pot experiment was carried out to evaluate the impact of plant growth regulators (PGRs) on translocation and accumulation of zinc (Zn) in grains of four wheat varieties of varying Zn sensitivities. Different concentrations of two (gibberellic acid and cytokinin) PGRs viz., control, 10 ppm gibberellic acid (GA), 20 ppm gibberellic acid (GA), 10 ppm cytokinin (kinetin), 20 ppm cytokinin (kinetin), 10 ppm gibberellic acid (GA) + cytokinin (kinetin), 20 ppm gibberellic acid (GA) + cytokinin (kinetin) were applied under different Zn regimes (control), soil application of 5 mg Zn kg-1 soil and soil application of 5 mg Zn kg-1 soil + foliar applications of 0.5% ZnSO4.7H2O + 0.25% lime). Four contrasting wheat varieties i.e., UP262 & PBW175 (Zn inefficient), UP2628 & UP2554 (Zn efficient); were tested for enzyme activities, yield attributes and Zn content in various plant parts. Regarding influence of PGR levels, the maximum CA and SOD activities were recorded under 20 ppm GA and control respectively. The grain yield, straw yield and grain Zn content was found to be the maximum under 10 ppm GA+cytokinin, 20 ppm GA and 20 ppm cytokinin respectively. Among all the methods used, soil along with foliar spray (Zn S+F) was found to be the most effective in improving all the crop parameters. Among varieties, the efficient sets of varieties (UP2628 & UP2554) performed better than Zn inefficient varieties. The use of plant growth regulators along with efficient delivery method could enhance the transport and accumulation of Zn in grains of wheat.","PeriodicalId":14689,"journal":{"name":"Israel Journal of Plant Sciences","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46575294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-17DOI: 10.1163/22238980-bja10050
W. Taye, M. Dejene, A. Ayalew, A. Chala
Use of resistant genotype is considered to be the most feasible means to mitigate sorghum grain damage by grain mold in a climate favourable for fungal invasion and subsequent mycotoxin contamination. Field-based experiments were conducted at Babile and Haramaya for two consecutive cropping seasons to evaluate 20 sorghum genotypes for their reaction to grain molds as well as aflatoxin and fumonisin contamination. Aspergillus flavus and Fusarium verticillioides with spore concentrations of 106 ml-1 were inoculated by spraying into the inflorescence, when the anther emerged from approximately 50–70% of the spikelets. Mycotoxin analysis was done using enzyme-linked immunosorbent assay (ELISA). The results revealed that the sorghum genotypes evaluated for their reactions to A. flavus and F. verticillioides inoculation had significantly different responses. Variety Melkam was identified as a susceptible genotype to F. verticillioides and variety Birhan was found resistant to both fungal species. Variety Long Muyera was the most susceptible to both toxigenic fungi. Long Muyera was contaminated with aflatoxin B1 and total fumonisin above the maximum tolerable limit of 10 µg kg-1 and 2000 µg kg-1, respectively. Though the sorghum genotype Birhan was resistant to A. flavus, its aflatoxin B1 contamination was relatively high. In this study, it was recognized that none of the tested sorghum genotypes exhibited possession of multiple resistance to the inoculated toxigenic fungi. Therefore, it is commendable to select and use genotypes, which are resistant to specific toxigenic fungi for a particular location, where the problem exists.
{"title":"Evaluation of sorghum genotypes for their reaction to major grain molds and mycotoxin-producing fungi in two climates of Ethiopia","authors":"W. Taye, M. Dejene, A. Ayalew, A. Chala","doi":"10.1163/22238980-bja10050","DOIUrl":"https://doi.org/10.1163/22238980-bja10050","url":null,"abstract":"\u0000Use of resistant genotype is considered to be the most feasible means to mitigate sorghum grain damage by grain mold in a climate favourable for fungal invasion and subsequent mycotoxin contamination. Field-based experiments were conducted at Babile and Haramaya for two consecutive cropping seasons to evaluate 20 sorghum genotypes for their reaction to grain molds as well as aflatoxin and fumonisin contamination. Aspergillus flavus and Fusarium verticillioides with spore concentrations of 106 ml-1 were inoculated by spraying into the inflorescence, when the anther emerged from approximately 50–70% of the spikelets. Mycotoxin analysis was done using enzyme-linked immunosorbent assay (ELISA). The results revealed that the sorghum genotypes evaluated for their reactions to A. flavus and F. verticillioides inoculation had significantly different responses. Variety Melkam was identified as a susceptible genotype to F. verticillioides and variety Birhan was found resistant to both fungal species. Variety Long Muyera was the most susceptible to both toxigenic fungi. Long Muyera was contaminated with aflatoxin B1 and total fumonisin above the maximum tolerable limit of 10 µg kg-1 and 2000 µg kg-1, respectively. Though the sorghum genotype Birhan was resistant to A. flavus, its aflatoxin B1 contamination was relatively high. In this study, it was recognized that none of the tested sorghum genotypes exhibited possession of multiple resistance to the inoculated toxigenic fungi. Therefore, it is commendable to select and use genotypes, which are resistant to specific toxigenic fungi for a particular location, where the problem exists.","PeriodicalId":14689,"journal":{"name":"Israel Journal of Plant Sciences","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45413004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-29DOI: 10.1163/22238980-bja10047
Rajat D Maheshwari, Namita Bhutani, P. Kumar, P. Suneja
Chickpea (Cicer arietinum), one of the major pulse crops in India, endured extreme reduction in production due to various abiotic and biotic stresses. Endophytic bacteria residing in the nodules and roots of chickpea plants enable host in combating these stresses. Twenty one endophytic bacteria isolated from nodules and roots of chickpea were screened for multiple plant growth promoting traits like ammonia, organic acid, siderophore, hydrogen cyanide (HCN) and phytohormone indole acetic acid (IAA) production. Out of these, 86% isolates produced ammonia, around 50% isolates produced organic acid, HCN and siderophore, 29% isolates produced ACC (1-aminocyclopropane-1-carboxylic acid) deaminase, while only 14% isolates solubilized phosphate. Interestingly, all the isolates were able to produce IAA ranging from 11.6–85.2 μg/ml, isolate CPJN 13 being the maximum IAA producer (85.5±2.33 μg/ml). Isolate CPJN13 was selected for IAA optimization studies. The yield of IAA increased up to 4 fold i.e. 331±4.96 μg/ml at optimized conditions. IAA production was also confirmed by TLC and HPLC analysis of crude IAA extract. The application of CPJN13 on chickpea seedlings resulted in significant increase in plant growth parameters. The 16S rDNA sequencing of CPJN13 revealed its similarity with Pseudomonas lini strain and submitted to NCBI with accession number MF574502. To best of our knowledge, this is the first report of the presence of P. lini as endophyte in chickpea nodules. The results of this study imply that the endophytic P. lini has a potential role to enhance the plant growth.
{"title":"Plant growth promoting potential of multifarious endophytic Pseudomonas lini strain isolated from Cicer arietinum L.","authors":"Rajat D Maheshwari, Namita Bhutani, P. Kumar, P. Suneja","doi":"10.1163/22238980-bja10047","DOIUrl":"https://doi.org/10.1163/22238980-bja10047","url":null,"abstract":"\u0000Chickpea (Cicer arietinum), one of the major pulse crops in India, endured extreme reduction in production due to various abiotic and biotic stresses. Endophytic bacteria residing in the nodules and roots of chickpea plants enable host in combating these stresses. Twenty one endophytic bacteria isolated from nodules and roots of chickpea were screened for multiple plant growth promoting traits like ammonia, organic acid, siderophore, hydrogen cyanide (HCN) and phytohormone indole acetic acid (IAA) production. Out of these, 86% isolates produced ammonia, around 50% isolates produced organic acid, HCN and siderophore, 29% isolates produced ACC (1-aminocyclopropane-1-carboxylic acid) deaminase, while only 14% isolates solubilized phosphate. Interestingly, all the isolates were able to produce IAA ranging from 11.6–85.2 μg/ml, isolate CPJN 13 being the maximum IAA producer (85.5±2.33 μg/ml). Isolate CPJN13 was selected for IAA optimization studies. The yield of IAA increased up to 4 fold i.e. 331±4.96 μg/ml at optimized conditions. IAA production was also confirmed by TLC and HPLC analysis of crude IAA extract. The application of CPJN13 on chickpea seedlings resulted in significant increase in plant growth parameters. The 16S rDNA sequencing of CPJN13 revealed its similarity with Pseudomonas lini strain and submitted to NCBI with accession number MF574502. To best of our knowledge, this is the first report of the presence of P. lini as endophyte in chickpea nodules. The results of this study imply that the endophytic P. lini has a potential role to enhance the plant growth.","PeriodicalId":14689,"journal":{"name":"Israel Journal of Plant Sciences","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42319117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-17DOI: 10.1163/22238980-bja10048
Kusum K. Thakur, Neerja R Khurana, N. Rani, V. Hooda
Nanosized titanium dioxide (nTiO2) is one of the most diverse nanomaterials available today but inconclusive studies on the effects of nTiO2 on plants are withholding its successful application in agriculture. In the present work, an attempt has been made to evaluate the interaction of nTiO2 with Vigna radiata (L.) Wilczek from the seed germination stage until the plants were 14 days old. TEM analysis revealed that nTiO2 was synthesized in the size range of 1–10 nm and X-ray diffraction (XRD) analysis confirmed the crystal structure. The plants were raised hydroponically in nutrient solution spiked with two different concentrations of nTiO2 (10 and 100 mg L−1). Inductively coupled plasma mass spectrometry (ICP-MS) results established the accumulation of nTiO2 in leaves. In response to the presence of nTiO2, V. radiata plants performed better as indicated by their increased seed germination, root and shoot length, higher fresh and dry weight and elevated chlorophyll and flavonoid contents. Germination percentage of V. radiata seeds increased by about 22% at 10 mg L−1 and 14% at 100 mg L−1 nTiO2 concentration. Maximum stimulation of total chlorophyll, flavonoids and phenolic contents was observed at 100 mg L−1 nTiO2 concentration in 7-day old plants, where an astonishing 8 fold increase in chlorophyll, 3 fold increase in flavonoids and 2 fold increase in phenolics was observed. However, a decrease in carbohydrate and protein contents and an increase in lipid peroxidation also marked the presence of mild oxidative stress that was neutralized by increased activity of antioxdant enzymes namely catalase, glutathione reductase and glutathione-s-transferase. The activity of superoxide dismutase was more or less stable while glutathione peroxidase activity reduced compared to the control plants. The higher ABTS and DPPH free radical scavenging activities of the nTiO2 treated plants also supported effective neutralization of free radicals.
{"title":"Enhanced growth and antioxidant efficiency of Vigna radiata seedlings in the presence of titanium dioxide nanoparticles synthesized via the sonochemical method","authors":"Kusum K. Thakur, Neerja R Khurana, N. Rani, V. Hooda","doi":"10.1163/22238980-bja10048","DOIUrl":"https://doi.org/10.1163/22238980-bja10048","url":null,"abstract":"\u0000Nanosized titanium dioxide (nTiO2) is one of the most diverse nanomaterials available today but inconclusive studies on the effects of nTiO2 on plants are withholding its successful application in agriculture. In the present work, an attempt has been made to evaluate the interaction of nTiO2 with Vigna radiata (L.) Wilczek from the seed germination stage until the plants were 14 days old. TEM analysis revealed that nTiO2 was synthesized in the size range of 1–10 nm and X-ray diffraction (XRD) analysis confirmed the crystal structure. The plants were raised hydroponically in nutrient solution spiked with two different concentrations of nTiO2 (10 and 100 mg L−1). Inductively coupled plasma mass spectrometry (ICP-MS) results established the accumulation of nTiO2 in leaves. In response to the presence of nTiO2, V. radiata plants performed better as indicated by their increased seed germination, root and shoot length, higher fresh and dry weight and elevated chlorophyll and flavonoid contents. Germination percentage of V. radiata seeds increased by about 22% at 10 mg L−1 and 14% at 100 mg L−1 nTiO2 concentration. Maximum stimulation of total chlorophyll, flavonoids and phenolic contents was observed at 100 mg L−1 nTiO2 concentration in 7-day old plants, where an astonishing 8 fold increase in chlorophyll, 3 fold increase in flavonoids and 2 fold increase in phenolics was observed. However, a decrease in carbohydrate and protein contents and an increase in lipid peroxidation also marked the presence of mild oxidative stress that was neutralized by increased activity of antioxdant enzymes namely catalase, glutathione reductase and glutathione-s-transferase. The activity of superoxide dismutase was more or less stable while glutathione peroxidase activity reduced compared to the control plants. The higher ABTS and DPPH free radical scavenging activities of the nTiO2 treated plants also supported effective neutralization of free radicals.","PeriodicalId":14689,"journal":{"name":"Israel Journal of Plant Sciences","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47276015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-06DOI: 10.1163/22238980-bja10049
R. Likhith, G. Alagarasan, R. Muthurajan, Boominathan Parasuraman, R. Subramanian
Mungbean (Vigna radiata L. Wilczek) an important legume crop with valuable nutritional and health benefits is severely affected by drought conditions. Desiccation tolerance is a capacity of seeds to survive and maintain physiological activities during storage and stress conditions. LEA proteins are group of stress associated proteins that help the plants survive water deficit stress. Here we have performed genome-wide analysis of mungbean LEA (VrLEA) genes, and also insilico physical/functional characterization. Gene-positioning showed that 307 VrLEAs are present in all the eleven chromosomes, but are unevenly distributed.Upstream promoter sequence analysis of LEA genes revealed the occurrence of MYB transcription factor (TF)in higher number compared to other TFs i.e., bZIP, AP2, WRKY, NAC and bHLH.Further, we downstreamed our analysis to fewer VrLEAs, based on drought responsive data. The VrLEAs obtained from the earlier experimental data were examined for its organelle localization and found that they are intracellular functional proteins.
绿豆(Vigna radiata L. Wilczek)是一种重要的豆科作物，具有宝贵的营养和健康效益，受到干旱条件的严重影响。干燥耐受性是种子在储存和胁迫条件下生存和维持生理活动的能力。LEA蛋白是一组帮助植物在缺水胁迫下生存的应激相关蛋白。在这里，我们对绿豆LEA (VrLEA)基因进行了全基因组分析，并进行了计算机物理/功能表征。基因定位结果表明，11条染色体均含有307个VrLEAs，但分布不均匀。LEA基因上游启动子序列分析发现，MYB转录因子(TF)的发生率高于bZIP、AP2、WRKY、NAC和bHLH等转录因子。此外，基于干旱响应数据，我们将分析下行到更少的vrlea。从早期实验数据中获得的VrLEAs进行了细胞器定位检查，发现它们是细胞内功能蛋白。
{"title":"Genome wide identification of mungbean (Vigna radiata [L.] R. Wilczek) Late Embryogenesis Abundant (LEA) protein gene family","authors":"R. Likhith, G. Alagarasan, R. Muthurajan, Boominathan Parasuraman, R. Subramanian","doi":"10.1163/22238980-bja10049","DOIUrl":"https://doi.org/10.1163/22238980-bja10049","url":null,"abstract":"\u0000Mungbean (Vigna radiata L. Wilczek) an important legume crop with valuable nutritional and health benefits is severely affected by drought conditions. Desiccation tolerance is a capacity of seeds to survive and maintain physiological activities during storage and stress conditions. LEA proteins are group of stress associated proteins that help the plants survive water deficit stress. Here we have performed genome-wide analysis of mungbean LEA (VrLEA) genes, and also insilico physical/functional characterization. Gene-positioning showed that 307 VrLEAs are present in all the eleven chromosomes, but are unevenly distributed.Upstream promoter sequence analysis of LEA genes revealed the occurrence of MYB transcription factor (TF)in higher number compared to other TFs i.e., bZIP, AP2, WRKY, NAC and bHLH.Further, we downstreamed our analysis to fewer VrLEAs, based on drought responsive data. The VrLEAs obtained from the earlier experimental data were examined for its organelle localization and found that they are intracellular functional proteins.","PeriodicalId":14689,"journal":{"name":"Israel Journal of Plant Sciences","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42616551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-03DOI: 10.1163/22238980-bja10045
J. Mareeswaran
Branch canker disease caused by the fungus Macrophoma theicola is a major stem disease that reduces the yield of south Indian tea plantations. Hence the present study aimed to assess the efficacy of the biocontrol agent Trichoderma spp against various isolates of Macrophoma spp. For this matter, different tea-growing regions of south India were surveyed for the isolation and characterization of Macrophoma spp. Then, fungal biocontrol strains (Trichoderma viride, Trichoderma atroviride, Trichoderma harzianum, and Gliocladium virens) were procured from microbial type culture collection Centre (MTCC) to screen their antagonistic potential on different isolates Macrophoma spp. The spores of Macrophoma spp were examined through a light microscope and identified by their peculiar morphological features such as non-septum pycnidiospores present in the sac and oval shape spore with stalk and confirmed using 18S rRNA gene sequence. The results revealed that the biocontrol G. virens followed by T. harzianum showed a higher inhibitory effect on different isolates of Macrophoma spp in the dual plate and culture filtrate studies. In the well diffusion method, the fungal biocontrol agents were found to be exhibit non-significant differences on different isolates of branch canker pathogen. The hyphal interactions studies showed that the pathogenic hyphal wall shrunk and penetrated by the interaction of G. virens.
{"title":"Influence of Trichoderma spp on Macrophoma theicola branch canker disease in South Indian tea gardens, India","authors":"J. Mareeswaran","doi":"10.1163/22238980-bja10045","DOIUrl":"https://doi.org/10.1163/22238980-bja10045","url":null,"abstract":"\u0000Branch canker disease caused by the fungus Macrophoma theicola is a major stem disease that reduces the yield of south Indian tea plantations. Hence the present study aimed to assess the efficacy of the biocontrol agent Trichoderma spp against various isolates of Macrophoma spp. For this matter, different tea-growing regions of south India were surveyed for the isolation and characterization of Macrophoma spp. Then, fungal biocontrol strains (Trichoderma viride, Trichoderma atroviride, Trichoderma harzianum, and Gliocladium virens) were procured from microbial type culture collection Centre (MTCC) to screen their antagonistic potential on different isolates Macrophoma spp. The spores of Macrophoma spp were examined through a light microscope and identified by their peculiar morphological features such as non-septum pycnidiospores present in the sac and oval shape spore with stalk and confirmed using 18S rRNA gene sequence. The results revealed that the biocontrol G. virens followed by T. harzianum showed a higher inhibitory effect on different isolates of Macrophoma spp in the dual plate and culture filtrate studies. In the well diffusion method, the fungal biocontrol agents were found to be exhibit non-significant differences on different isolates of branch canker pathogen. The hyphal interactions studies showed that the pathogenic hyphal wall shrunk and penetrated by the interaction of G. virens.","PeriodicalId":14689,"journal":{"name":"Israel Journal of Plant Sciences","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48821598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-22DOI: 10.1163/22238980-bja10046
F. Hancı
Considering the high importance of leek as a vegetable crop, this species is rarely an object of molecular genetic studies. In this study, SRAP and ISSR markers were used for the first time to investigate the genetic diversity in Turkish leek accessions together with some morphological characters. The study was conducted in Erciyes University Faculty of Agriculture in 2018–2020. Thirty-seven local varieties were collected from different towns in Turkey. Also, nineteen leek accessions, which originated from different regions of Turkey, had been kindly obtained from Plant Gene Banks, USDA. Seventeen SRAP and three ISSR markers were screened; all of them exposing 137 reproducible bands, of which 114 resulted in polymorphic. Polymorphism information content (PIC) varied between 0.209 and 0.840. Genetic similarities varied from 0.563 to 0.960, with an average of 0.789. In addition to molecular markers, the entire gene pool was morphologically characterized over two-year data. For this purpose, eight characters, which play a key role in leek breeding, were measured. At the end of the study, the analyzes made according to the molecular and morphological data were compared both separately and in combination. In all groupings, it was found remarkable that the accessions numbered 98*3, 40*1, 40*4, and 40*6 were positioned differently from the others. These results have provided important insights into the genetic variability of Turkish leek accessions for the first time. Also, the diversity analysis performed in this study provides valuable information to researchers for future studies.
{"title":"The first assessment of genetic diversity among Turkish leek accessions using molecular and morphological markers","authors":"F. Hancı","doi":"10.1163/22238980-bja10046","DOIUrl":"https://doi.org/10.1163/22238980-bja10046","url":null,"abstract":"\u0000Considering the high importance of leek as a vegetable crop, this species is rarely an object of molecular genetic studies. In this study, SRAP and ISSR markers were used for the first time to investigate the genetic diversity in Turkish leek accessions together with some morphological characters. The study was conducted in Erciyes University Faculty of Agriculture in 2018–2020. Thirty-seven local varieties were collected from different towns in Turkey. Also, nineteen leek accessions, which originated from different regions of Turkey, had been kindly obtained from Plant Gene Banks, USDA. Seventeen SRAP and three ISSR markers were screened; all of them exposing 137 reproducible bands, of which 114 resulted in polymorphic. Polymorphism information content (PIC) varied between 0.209 and 0.840. Genetic similarities varied from 0.563 to 0.960, with an average of 0.789. In addition to molecular markers, the entire gene pool was morphologically characterized over two-year data. For this purpose, eight characters, which play a key role in leek breeding, were measured. At the end of the study, the analyzes made according to the molecular and morphological data were compared both separately and in combination. In all groupings, it was found remarkable that the accessions numbered 98*3, 40*1, 40*4, and 40*6 were positioned differently from the others. These results have provided important insights into the genetic variability of Turkish leek accessions for the first time. Also, the diversity analysis performed in this study provides valuable information to researchers for future studies.","PeriodicalId":14689,"journal":{"name":"Israel Journal of Plant Sciences","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47577001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-02DOI: 10.1163/22238980-bja10044
Patrik Mészáros, Ľ. Rybanský, Monika Bardáčová, Marcel Roszival, I. Matušíková
Metal pollution represents a serious issue for sustainable agronomy and food safety. Activation of plants’ protective mechanisms has been shown to depend on the extent of soil contamination with metal, but reports on dose-dependent responses (especially to extreme concentrations) are rather rare. In this research we exposed soybean (Glycine max L.) roots at a very early stage to a scale of cadmium concentrations, including doses far exceeding the amounts found in nature. Spectrophotometrical and enzyme in-gel detection assays were used to examine ongoing defence responses. The results confirmed commonly reported findings on inhibited growth and the activation of several superoxide dismutase isoforms in a dose-dependent manner. Contrary to expectations, the hydrogen peroxide levels, proline accumulation and the rate of lipid peroxidation were suppressed with increasing metal doses. More importantly, the linearity of Cd accumulation in soybean roots was interrupted at 200 mg.l−1 of cadmium, which coincides with peculiar responses of several chitinase family members. No such nonlinear response was observable for proline accumulation or any of the SOD isoforms. Possible explanations are provided and the importance of considering the metal stress dose is stressed to avoid false generalizations on plant defence responses.
金属污染是可持续农业和食品安全的一个严重问题。植物保护机制的激活已被证明取决于土壤中金属污染的程度，但关于剂量依赖性反应（尤其是对极端浓度）的报道相当罕见。在这项研究中，我们在很早的阶段就将大豆（Glycine max L.）根暴露在一定程度的镉浓度下，包括远远超过自然界中发现的剂量。分光光度法和凝胶酶检测法用于检测正在进行的防御反应。该结果证实了通常报道的以剂量依赖性方式抑制生长和激活几种超氧化物歧化酶异构体的发现。与预期相反，过氧化氢水平、脯氨酸积累和脂质过氧化速率随着金属剂量的增加而受到抑制。更重要的是，大豆根中镉积累的线性在200 mg·l−1的镉，这与几个几丁质酶家族成员的特殊反应一致。脯氨酸积累或任何SOD亚型都没有观察到这种非线性反应。提供了可能的解释，并强调了考虑金属胁迫剂量的重要性，以避免对植物防御反应的错误概括。
{"title":"Soybean roots defence against cadmium and its dependence on dose in a non-linear manner","authors":"Patrik Mészáros, Ľ. Rybanský, Monika Bardáčová, Marcel Roszival, I. Matušíková","doi":"10.1163/22238980-bja10044","DOIUrl":"https://doi.org/10.1163/22238980-bja10044","url":null,"abstract":"\u0000Metal pollution represents a serious issue for sustainable agronomy and food safety. Activation of plants’ protective mechanisms has been shown to depend on the extent of soil contamination with metal, but reports on dose-dependent responses (especially to extreme concentrations) are rather rare. In this research we exposed soybean (Glycine max L.) roots at a very early stage to a scale of cadmium concentrations, including doses far exceeding the amounts found in nature. Spectrophotometrical and enzyme in-gel detection assays were used to examine ongoing defence responses. The results confirmed commonly reported findings on inhibited growth and the activation of several superoxide dismutase isoforms in a dose-dependent manner. Contrary to expectations, the hydrogen peroxide levels, proline accumulation and the rate of lipid peroxidation were suppressed with increasing metal doses. More importantly, the linearity of Cd accumulation in soybean roots was interrupted at 200 mg.l−1 of cadmium, which coincides with peculiar responses of several chitinase family members. No such nonlinear response was observable for proline accumulation or any of the SOD isoforms. Possible explanations are provided and the importance of considering the metal stress dose is stressed to avoid false generalizations on plant defence responses.","PeriodicalId":14689,"journal":{"name":"Israel Journal of Plant Sciences","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42120074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-21DOI: 10.1163/22238980-20210001
Anat Elmann
Traditionally, horticultural research has concentrated on plant biochemistry and physiology, agricultural aspects, crop resistance to diseases, and so on. However, all plants contain many and various phytochemicals, with diverse biological activities. Throughout most of human history, before the development of the conventional pharmaceutical industry, herbal extracts containing these bioactive molecules were used to treat various diseases and symptoms. Herbal substances have also inspired the development of conventional medicines, with some of these medicines requiring a doctor’s prescription. The process of discovering plant substances with medical activities is long and multistaged, and is based on both ethnobotanical knowledge and experimental evidence. Due to the development of new areas of science, scientists have gained better understanding regarding the potential of plants beyond these classical research areas. This is why horticultural research expanded to new areas that bridge between human health and horticulture, the horticulture-health interphase.
{"title":"Special issue: Health promoting activities of phytochemicals","authors":"Anat Elmann","doi":"10.1163/22238980-20210001","DOIUrl":"https://doi.org/10.1163/22238980-20210001","url":null,"abstract":"Traditionally, horticultural research has concentrated on plant biochemistry and physiology, agricultural aspects, crop resistance to diseases, and so on. However, all plants contain many and various phytochemicals, with diverse biological activities. Throughout most of human history, before the development of the conventional pharmaceutical industry, herbal extracts containing these bioactive molecules were used to treat various diseases and symptoms. Herbal substances have also inspired the development of conventional medicines, with some of these medicines requiring a doctor’s prescription. The process of discovering plant substances with medical activities is long and multistaged, and is based on both ethnobotanical knowledge and experimental evidence. Due to the development of new areas of science, scientists have gained better understanding regarding the potential of plants beyond these classical research areas. This is why horticultural research expanded to new areas that bridge between human health and horticulture, the horticulture-health interphase.","PeriodicalId":14689,"journal":{"name":"Israel Journal of Plant Sciences","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44501885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-20DOI: 10.1163/22238980-bja10036
R. Einav, M. Guiry, Á. Israel
A taxonomic list of macro marine algae (seaweeds) described in the literature for the Red Sea during the years 1756–2020 is presented. The list was prepared using existing published studies, local monitoring reports, as well as “grey” or unpublished lists of seaweeds for the area. Altogether, we examined more than 300 publications and compiled more than 900 taxonomic names, of which 576 correspond to valid species, whilst 355 names were considered synonyms for these species. The phylum Chlorophyta (green seaweeds) was represented by 37 currently accepted genera and 133 species (including 74 species synonyms). The phylum Ochrophyta (Phaeophyceae only; brown seaweeds) was represented by 52 genera, 157 species and 99 synonyms; and the phylum Rhodophyta (red seaweeds) by 130 genera, 286 species and 182 synonyms. The brown seaweed Sargassum appears to be a particularly biodiverse genus in the area represented by 58 species and 26 synonyms. Our study shows the inconsistency and lack of long-term taxonomic studies and recent molecular investigations of seaweeds from nearly the whole Red Sea.
{"title":"A revised list of seaweeds from the Red Sea (1756–2020)","authors":"R. Einav, M. Guiry, Á. Israel","doi":"10.1163/22238980-bja10036","DOIUrl":"https://doi.org/10.1163/22238980-bja10036","url":null,"abstract":"\u0000A taxonomic list of macro marine algae (seaweeds) described in the literature for the Red Sea during the years 1756–2020 is presented. The list was prepared using existing published studies, local monitoring reports, as well as “grey” or unpublished lists of seaweeds for the area. Altogether, we examined more than 300 publications and compiled more than 900 taxonomic names, of which 576 correspond to valid species, whilst 355 names were considered synonyms for these species. The phylum Chlorophyta (green seaweeds) was represented by 37 currently accepted genera and 133 species (including 74 species synonyms). The phylum Ochrophyta (Phaeophyceae only; brown seaweeds) was represented by 52 genera, 157 species and 99 synonyms; and the phylum Rhodophyta (red seaweeds) by 130 genera, 286 species and 182 synonyms. The brown seaweed Sargassum appears to be a particularly biodiverse genus in the area represented by 58 species and 26 synonyms. Our study shows the inconsistency and lack of long-term taxonomic studies and recent molecular investigations of seaweeds from nearly the whole Red Sea.","PeriodicalId":14689,"journal":{"name":"Israel Journal of Plant Sciences","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46515418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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