Scientia Horticulturae最新文献

{"title":"Identification and functional studies on the role of PlSPL7 in herbaceous peony stem","authors":"Renkui Yu ,&nbsp;Huajie Xu ,&nbsp;Yuhan Tang ,&nbsp;Jun Tao","doi":"10.1016/j.scienta.2024.113931","DOIUrl":"10.1016/j.scienta.2024.113931","url":null,"abstract":"<div><div>The herbaceous peony (<em>Paeonia lactiflora</em> Pall.) holds an important position in Chinese culture and is an increasingly popular choice for high-quality cut flowers. The quality of herbaceous peony is significantly impacted by the bending of herbaceous peony stems. Although several regulatory factors participating in stem development have been identified in other plants, only a few involved in herbaceous peony have been reported. In the present investigation, we isolated and cloned the SPL transcription factor <em>PlSPL7</em> from the herbaceous peony and verified its function in the stems. <em>PlSPL7</em> has a reading frame that spans 2,683 base pairs and codes for 774 amino acids and contains a conserved SBP structural domain. qRT-PCR showed that the expression of <em>PlSPL7</em> decreased gradually during herbaceous peony stem development, with significant expression in the stem. Subcellular localization analysis revealed that the PlSPL7 protein localized in both the nucleus and the cytoplasmic membrane. Heterologous overexpression of <em>PlSPL7</em> resulted in a decrease in stem diameter and strength, as well as a reduction in xylem width and lignin accumulation. These results indicate that <em>PlSPL7</em> may have a controlling function in the growth of stem and could be a potential candidate gene influencing plant stem straightness through its regulation of lignin accumulation, thereby offering fresh perspectives on plant stem growth and development.</div></div>","PeriodicalId":21679,"journal":{"name":"Scientia Horticulturae","volume":"340 ","pages":"Article 113931"},"PeriodicalIF":3.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative physiology and transcriptome analysis revealed the mechanisms underlying red leaf formation in Cymbidium ensifolium","authors":"Longwei Xiong,&nbsp;Yue Ou,&nbsp;Peng Li,&nbsp;Yang Tian,&nbsp;Liting Guo,&nbsp;Jinjin Li,&nbsp;Yuyan Li,&nbsp;Binxian Su,&nbsp;Donghui Peng,&nbsp;Zhongjian Liu,&nbsp;Ye Ai","doi":"10.1016/j.scienta.2024.113933","DOIUrl":"10.1016/j.scienta.2024.113933","url":null,"abstract":"<div><div>Colorful leaves, particularly red ones, represent an important ornamental trait of <em>Cymbidium ensifolium</em>. However, the mechanisms underlying red leaf formation in <em>C. ensifolium</em> are not well understood. In this study, we examined the phenotypic, physiological, and transcriptomic differences between red and green leaves at various developmental stages. We found that red leaves exhibited significantly lower levels of chlorophyll <em>a</em>, chlorophyll <em>b</em>, carotenoids, and total chlorophyll across all stages, while anthocyanin levels were notably higher. Ultrastructural analysis revealed abnormalities in the chloroplast structure of red leaves, including fewer chloroplasts, ruptured thylakoid membranes, an indistinct matrix layer, and the accumulation of osmiophilic particles, which led to reduced photosynthetic capacity. In addition, transcriptomic analysis showed significant differences in the expression of genes related to anthocyanin biosynthesis, chlorophyll metabolism, and photosynthesis between red and green leaves at different stages of growth. Therefore, we suggest that red leaf formation in <em>C. ensifolium</em> is driven by reduced expression of chlorophyll metabolism genes, resulting in impaired chloroplast development and chlorophyll synthesis, while upregulation of anthocyanin biosynthesis genes promotes anthocyanin accumulation, leading to the red coloration. These findings provide valuable insights into color formation mechanisms of red leaves in <em>C. ensifolium</em>.</div></div>","PeriodicalId":21679,"journal":{"name":"Scientia Horticulturae","volume":"340 ","pages":"Article 113933"},"PeriodicalIF":3.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization strategy for establishing an efficient mature embryo reproduction system of Paeonia lactiflora Pall.","authors":"Rujie Xin ,&nbsp;Yaohong Song ,&nbsp;Xinzhuo Zhang ,&nbsp;Xuening Kang ,&nbsp;Xiaoqing Zhou ,&nbsp;Wenhui Song ,&nbsp;Shixin Guan ,&nbsp;Xiaomei Sun","doi":"10.1016/j.scienta.2025.113952","DOIUrl":"10.1016/j.scienta.2025.113952","url":null,"abstract":"<div><div>Herbaceous peony (<em>Paeonia lactiflora</em> Pall.) is one of the traditional famous flowers in China, which has high ornamental and medicinal value. In order to meet the needs of modern large-scale production of <em>P. lactiflora</em> and the development of new variety breeding work, we used <em>P. lactiflora</em> seed embryos as experimental materials to study the embryo germination of <em>P. lactiflora</em>, the induction, proliferation and rooting of multiple shoots, in order to establish an efficient and stable regeneration system of <em>P. lactiflora</em>. Our research outcomes demonstrated that the embryos could effectively germinate in Murashige and Skoog (MS) medium supplemented with gibberellin 3 (GA₃) and 6-benzyleaminopurine (6-BA), achieving a germination rate of up to 91.11 %. Direct seedling formation from <em>P. lactiflora</em> embryos was achievable in 1/2 MS medium enriched with 6-BA, 1-naphthaleneacetic acid (NAA), and GA₃, with the highest seedling rate reaching 67.78 %. The induction of multiple shoots in <em>P. lactiflora</em> was facilitated by the use of Woody Plant Medium (WPM) containing 6-BA, GA₃, and 30 g/L sucrose, resulting in an induction rate of 96.67 %. The proliferation of these shoots was further enhanced by incorporating gibberellin 3 (GA₃), 6-benzyleaminopurine (6-BA), and 30 g/L glucose into the WPM medium, resulting in a proliferation coefficient of 3.48. Effective rooting was achieved by adding indolebutyric acid (IBA) and activated carbon (AC) to the WPM medium, with a rooting rate of 73.33 %. In summary, our system improved the induction and rooting of multiple shoots of <em>P. lactiflora</em> by refining the basal medium, plant growth regulators, and carbon sources. This has led to the establishment of an efficient and stable regeneration system for <em>P. lactiflora</em>, providing a solid foundation for subsequent genetic transformation research.</div></div>","PeriodicalId":21679,"journal":{"name":"Scientia Horticulturae","volume":"340 ","pages":"Article 113952"},"PeriodicalIF":3.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metabolite accumulation pathway of watercore in apple fruit: An integrative transcriptome and metabolome analysis","authors":"Yongli Jiang ,&nbsp;Maiqi Zhang ,&nbsp;Xinyi Yin ,&nbsp;Zhijia Liu ,&nbsp;Linyan Zhou ,&nbsp;Xiaosong Hu ,&nbsp;Junjie Yi","doi":"10.1016/j.scienta.2025.113954","DOIUrl":"10.1016/j.scienta.2025.113954","url":null,"abstract":"<div><div>The distinctive morphology and flavor of watercored apples have drawn significant interest, yet the molecular mechanisms differentiating watercored and non-watercored tissues remain unclear. This study investigates the pathways involved in apple watercore formation by integrating metabolomic and transcriptomic data. Our findings revealed that sugar metabolism was prioritized enriched in watercored apple, including highly accumulated sorbitol. Up-regulated expression of sorbitol dehydrogenase showed no relationship between its activity and watercore formation. Watercore induced up-regulated expression levels of sucrose synthesis-related genes (e.g., sucrose-phosphate phosphatase), whereas it inhibited the expression of glucose decomposition-related genes (hexokinase). Additionally, significantly higher calcium content was detected in watercored apples. Furthermore, plant-pathogen interaction was down-regulated. Watercore was also associated with the expression level of genes related to defense and cold stress. These findings offer new insights into the molecular basis of watercore, laying the groundwork for targeted postharvest interventions to improve apple quality and storage resilience.</div></div>","PeriodicalId":21679,"journal":{"name":"Scientia Horticulturae","volume":"340 ","pages":"Article 113954"},"PeriodicalIF":3.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nano-encapsulated biostimulant enhances growth and postharvest quality of chili peppers (Capsicum annuum)","authors":"Stella Matthews ,&nbsp;Asgar Ali ,&nbsp;Yasmeen Siddiqui","doi":"10.1016/j.scienta.2024.113920","DOIUrl":"10.1016/j.scienta.2024.113920","url":null,"abstract":"<div><div>Biostimulants play a vital role in improving the postharvest quality of agricultural produce. However, biostimulant efficiency assessment is mainly based on vegetative growth and crop yield. The function of biostimulants must be evaluated thoroughly to determine their contribution to enhancing the phenotypic characteristics and nutritional value of produce. This study evaluated a new formulation of microbial and botanical biostimulants on the capsaicin, ascorbic acid, flavonoid, and phenolic content of chilies. Biostimulant treatment recorded 0.618 quantum yield (QY) value compared with 0.581 quantum yield value of plants not treated with biostimulants, representing the plant's photosynthetic capacity. The chili plants treated with the biostimulant showed a significant increase in height and yield, which accounted for 60 cm of mean value and 575.41 g than plants that were not treated with the biostimulants, which represented 53 cm height of the mean value and 522.16 g of yield. Chili plants treated with biostimulant showed a higher L value, −15.38 ± 11.9 and a chroma value of 8.77 ± 5.56 in chili fruits compared to −8.29 ± 7.97 of l-value and 5.30 ± 6.81 mean chroma value in chili plants not treated with biostimulants. Red chilies harvested from plants that were not treated with biostimulants recorded the highest phenolic content (1.332 ± 0.56 mg/L) compared to the chilies that were treated with biostimulants (0.8830 ± 0.19 mg/L). In contrast, red chilies harvested from the plants treated with biostimulants recorded the highest flavonoid content (15.77 ± 1.0 mg/L) than plants not treated with biostimulants (13.098 ± 1.8 mg/L). Biostimulant treatment enhanced the capsaicin content in the early stages of chili development. The highest ascorbic acid content in chilies treated with biostimulants (144.29 ± 6.1 mg/L), followed by green chilies treated with biostimulants twenty-seven days after anthesis (132.85 ± 1.67). These results indicate the potential of nano-encapsulated microbial and botanical biostimulants to improve the postharvest quality of chili fruits.</div></div>","PeriodicalId":21679,"journal":{"name":"Scientia Horticulturae","volume":"340 ","pages":"Article 113920"},"PeriodicalIF":3.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identification and characterization of NAC transcription factor and their expression patterns under various treatments in Lycoris radiata","authors":"Guowei Song ,&nbsp;Zhong Wang ,&nbsp;Xiaoxiao Xu ,&nbsp;Xiaochun Shu ,&nbsp;Fengjiao Zhang ,&nbsp;Weibing Zhuang ,&nbsp;Tao Wang ,&nbsp;Yuhang Li ,&nbsp;Ning Wang","doi":"10.1016/j.scienta.2025.113951","DOIUrl":"10.1016/j.scienta.2025.113951","url":null,"abstract":"<div><div>As one of the most extensive plant-specific transcription factors (TFs), the NAC family is essential for plant growth and development and their response to environmental stress. However, its functional characterization in <em>Lycoris</em>, particularly in <em>Lycoris radiata</em>, a commercial and agricultural crop that produces Amaryllidaceae alkaloids, has not yet been completed. In this study, the transcriptomic database of <em>L. radiata</em> was used to identify 42 <em>LrNAC</em> genes, which were then classified into 15 subgroups as per the phylogenetic tree that was constructed <em>via</em> NAC family members of <em>Arabidopsis thaliana</em>. This research comprises basic bioinformatics analyses, such as protein sequence length, molecular weight, and the identification of its conserved motifs. For the gene expression analysis, <em>LrNACs</em> were expressed in all tissues and had tissue-specific expression based on real-time quantitative PCR (RT–qPCR). The transcriptomic profiles of the genes were very different, indicating that these <em>LrNACs</em> have various functions in <em>L. radiata</em> growth and development. Furthermore, the <em>LrNACs</em> gene expression patterns in response to drought, salt, heat, cold stresses, and treatments with Abscisic Acid (ABA) and Methyl Jasmonate (MeJA) were characterized. The gene-gene interaction network analysis revealed the presence of synergistic effects between various <em>LrNAC</em> genes' responses against abiotic stresses. Among them, <em>LrNAC08</em> and <em>LrNAC09</em> are potential regulators in plants' responses to salt and drought stress due to their coordinated expression under various stress conditions. Additionally, the expression of <em>LrNAC29</em> is linked to its role in ABA signaling, indicating its involvement in <em>Lycoris</em>'s salt stress response. The results of this study could provide valuable information for further functional analysis of <em>LrNACs</em> and for the improvement of stress resistance in <em>L. radiata</em>.</div></div>","PeriodicalId":21679,"journal":{"name":"Scientia Horticulturae","volume":"340 ","pages":"Article 113951"},"PeriodicalIF":3.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variability, sustainability and productivity of banana and lemongrass intercropping based on yield components and competitive indices","authors":"Paulo Ricardo Rodrigues de Jesus ,&nbsp;Sarita Leonel ,&nbsp;Magali Leonel ,&nbsp;Hebert Teixeira Cândido ,&nbsp;Marco Antonio Tecchio","doi":"10.1016/j.scienta.2024.113946","DOIUrl":"10.1016/j.scienta.2024.113946","url":null,"abstract":"<div><div>The diversification of banana germplasm is necessary for a sustainable and profitable crop. Intercropping can be a promising technique for more efficient and sustainable horticultural crops production. One of the biggest challenges of intercropping with two or more crops is maintaining the productivity of each single crop. This study was performed in the Midwest of the state of São Paulo, in the subtropical region of southeastern Brazil to evaluate the yield performance and competitiveness indices of four banana (‘BRS FHIA Maravilha’, ‘BRS Pacoua’, ‘SCS451 Catarina’ and ‘Prata Anã’) genotypes in intercropping with lemongrass. Field experiments were conducted over two consecutive seasons. Cropping systems has no effect on banana yields, but variations were observed between cultivars. The highest yields were obtained in the bananas ‘SCS451 Prata Catarina’ and ‘BRS FHIA Maravilha’ at both harvest seasons, while the ‘BRS Pacoua’ showed the lowest yields. Lemongrass intercropped with banana cultivars showed no difference in yield in the two years of cropping. However, the average cumulative yield of lemongrass increased according to the harvest time evaluated, with 10.9 t ha^-1 in the first year and 24.5 t ha^-1 in the second year. The average total land use efficiency and the area-time equivalent ratio had values &gt; 1.0, indicating higher yields in intercropping compared to sole cropping. The competitive relationship between the two crops showed that the banana cultivars were less competitive for environmental resources than lemongrass.</div></div>","PeriodicalId":21679,"journal":{"name":"Scientia Horticulturae","volume":"340 ","pages":"Article 113946"},"PeriodicalIF":3.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulation and analysis of pumpkin leaf growth-photosynthesis-yield relationship under water‐fertilizer coupling by SEM","authors":"Pengliang Tian ,&nbsp;Jinxia Zhang ,&nbsp;Lin Ding ,&nbsp;Tao Zhong ,&nbsp;Meng Yin ,&nbsp;Runheng Yang ,&nbsp;Liangliang Du ,&nbsp;Yingru Xie","doi":"10.1016/j.scienta.2024.113923","DOIUrl":"10.1016/j.scienta.2024.113923","url":null,"abstract":"<div><div>Pumpkin is an important cash crop in the northwestern arid region of China. Its yield is closely related to leaf growth and photosynthetic characteristics, which are nutritionally regulated by water-fertilizer coupling. Through a two year field experiment, the relationship between leaf growth, photosynthetic characteristics and yield under water-fertilizer coupling was analyzed. The results showed that leaf area index (LAI), soil and plant analyzer development value (SPAD), net photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (Gs) and yield all increased with increasing irrigation quota, and showed an increasing and then decreasing trend with increasing organic fertilizer application amount. Under F2W3 treatment (irrigation quota of 525 m³·ha⁻¹ and total fertilization application of 5700kg·ha⁻¹), LAI, SPAD, Pn, Tr, Gs and yield were all the highest. Water-fertilizer coupling had highly significant effects on yield, SPAD and Gs(<em>P</em> &lt; 0.01), significant effects on LAI at maturity stage and Tr at flowering stage (<em>P</em> &lt; 0.05). Based on structural equation modeling (SEM), it was shown that a reasonable water-fertilizer coupling could regulate LAI and SPAD of pumpkin leaves, and then improve their photosynthetic characteristics, and ultimately increase pumpkin yield. Gs (as the key index of photosynthetic characteristics) and SPAD (as that of leaf growth) were extracted separately for a comprehensive evaluation of Yield-SPAD-Gs. It was found that the range of optimal irrigation quota regulated by water-fertilizer coupling was 510.57 ∼ 526.9 m³·ha⁻¹, and that of optimal organic fertilizer application was 5698.24 ∼ 6465.54 kg·ha⁻¹. Therefore, F2W3 treatment was recommended as the optimal treatment for pumpkin cultivation in the region.</div></div>","PeriodicalId":21679,"journal":{"name":"Scientia Horticulturae","volume":"340 ","pages":"Article 113923"},"PeriodicalIF":3.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing ornamental qualities of southern highbush blueberry container plants with paclobutrazol in subtropical climates","authors":"Chih-Hsuan Chen ,&nbsp;Syuan-You Lin ,&nbsp;Chin-Mu Chen","doi":"10.1016/j.scienta.2024.113928","DOIUrl":"10.1016/j.scienta.2024.113928","url":null,"abstract":"<div><div>Interest in ornamental blueberries (<em>Vaccinium</em> spp.) for container gardening is increasing, particularly among home gardeners seeking plants with both aesthetic appeal and edible qualities. However, the adaptability of current ornamental blueberry cultivars in subtropical regions is limited due to their moderate to high chilling requirements. This study aimed to enhance the ornamental qualities of southern highbush blueberry (<em>Vaccinium corymbosum</em> L. interspecific hybrids) cultivars ‘Warm Land’ and ‘Biloxi’, which were not initially bred for ornamental use, through foliar application of paclobutrazol (PBZ). We investigated the effects of PBZ on controlling plant height, canopy spread, and fruit cluster characteristics on whips and laterals. Two field experiments were conducted in central Taiwan during the 2021–2023 season. In mid-September 2021, the first experiment involved treating ‘Warm Land’ plants with PBZ at 0, 4.6, 46, and 230 mg·L^–1. Although PBZ at 4.6 mg·L^–1 did not affect the plant height, canopy spread, and plant-to-pot height, PBZ at 46 and 230 mg·L^–1 significantly reduced these parameters by 17.1 %–33.6 %, 17.5 %–29.0 %, and 16.3 %–32.7 %, respectively, compared to the untreated control. The highest PBZ concentration also reduced the length of the main inflorescence axis and fruit number per fruit cluster on whips by 49.7 % and 31.5 %, respectively. In contrast, while the length of the main inflorescence axis on laterals was reduced, fruit number was not significantly affected. The second experiment in 2022 included both ‘Warm Land’ and ‘Biloxi’ and confirmed that PBZ effectively reduced plant height and altered fruit cluster characteristics without significantly affecting the canopy spread. Compared to the untreated control, higher PBZ concentrations (46 and 230 mg·L^–1) significantly reduced the length of the main inflorescence axis on whips and laterals by 38.2 %–48.5 % and 20.0 %–40.0 %, respectively. Notably, at 230 mg·L^–1 PBZ, compressed and deformed fruits were observed on whips. Although there was no significant reduction in the fruit number per cluster on whips, the fruit number per fruit cluster on laterals was significantly reduced by 26.2 % and 30.8 % at 46 and 230 mg·L^–1 PBZ, respectively. Our results indicate that a single foliar application of 46 mg·L^–1 PBZ effectively improves the ornamental qualities of ‘Warm Land’ and ‘Biloxi’ without negatively impacting the appearance of the fruits. This approach offers a cost-effective strategy to enhance ornamental traits of existing southern highbush blueberry cultivars and expands the use of ornamental blueberries in subtropical climates, thus diversifying the options available to home gardeners.</div></div>","PeriodicalId":21679,"journal":{"name":"Scientia Horticulturae","volume":"340 ","pages":"Article 113928"},"PeriodicalIF":3.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling growth and metabolic dynamics in drought-stressed spinach plants: Exploring the contribution of biological gibberellin","authors":"Hend A. Hamed ,&nbsp;Ghada Abd-Elmonsef Mahmoud ,&nbsp;Amany H.A. Abeed","doi":"10.1016/j.scienta.2024.113924","DOIUrl":"10.1016/j.scienta.2024.113924","url":null,"abstract":"<div><div>Sustainable agriculture is a major theme of the Food and Agriculture Organization (FAO) Strategic Framework 2022–2031. Using microbial-based regulators is a sustainable organic approach to accomplish food safety. Normally, drought is a menace to most crops' agricultural production, but for leafy green vegetables the matter is more frustrating due to grade standards. Despite breakthroughs in boosting crop tolerance to drought stress, the quest for leafy greens remains restricted. The current report is to study the ability of biologically-produced gibberellin by <em>Fusarium oxysporum</em> in alleviating water stress in leafy vegetable spinach, <em>Spinacia oleracea</em>. Endophytic <em>Fusarium oxysporum</em> demonstrated high gibberellin production by 200±5.9 mg <em>L</em>⁻¹. Water stress (100, 75, 50, 25 % field capacity, FC) generated mild to severe abnormal growth and physiological dynamics. Foliar-applied biological gibberellin (BG) motivated plant yield and quality by boosting various phenotypic and physiological features in terms of plant height, biomass, and number of leaves accompanied by thicker epicuticular wax, balanced water status, higher photosynthetic pigment, increased osmoprotectants. BG shoulders a role in upgrading plant liveness via exacerbating antioxidants (anthocyanin, ascorbic acids, total antioxidants, and flavonoids) joined with activation of secondary metabolizing enzyme phenylalanine ammonia-lyase PAL, fulfilling consumer demand standards for spinach as well as lowering the content of phenolics and its oxidizing enzyme polyphenol oxidas (PPO, browning causer). Catalase (CAT), superoxide dismutase (SOD), and peroxidase (POD) were instigated thus maintaining electrolyte leakage, cellular O₂^·−, ^·OH, H₂O₂, malondialdehyde, and lipid peroxidation at baseline levels. BG appears to reduce nitrative toxicity via enhancing nitrate reductase (NR) activity. BG foliar spray increased spinach's resilience to dehydration and its capacity to produce an adequate upgraded yield while cultivated with reduced water regimes or even exposed to drought.</div></div>","PeriodicalId":21679,"journal":{"name":"Scientia Horticulturae","volume":"340 ","pages":"Article 113924"},"PeriodicalIF":3.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}