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Iron deficiency impacts chlorophyll biosynthesis, leaf cell expansion, xylem development and physiology of Prunus persica grafted onto rootstocks Garnem and GF 677 铁缺乏对甘尼姆和GF 677嫁接桃李叶绿素合成、叶细胞扩增、木质部发育和生理的影响
IF 0.9 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2022-03-30 DOI: 10.13080/z-a.2022.109.008
Servet Aras, H. Keles, Erhan Bozkurt
Rootstocks tolerant to iron (Fe) deficiency can be used to cope with Fe chlorosis damage. In the experiment, two peach (Prunus persica (L.) Batsch) rootstocks Garnem and GF 677 grown under Fe deficiency conditions were compared. Plants were subjected to Fe deficiency for three months, and some leaf physiological and histological responses were assessed. The relative growth rate of scion diameter and the root to shoot dry weight ratio decreased in both rootstocks. Leaf malondialdehyde content increased in rootstocks Garnem and GF 677 by 22% and 15%, respectively. In leaves, total phenolic content decreased in both rootstocks. Leaf chlorophyll and chlorophyll precursor concentrations decreased under Fe deficiency. Midrib and xylem thickness, xylem conduit width and number of xylem conduits decreased because of Fe deficiency, and the decreases in the parameters were found higher in rootstocks Garnem. Iron triggered leaf cell division, but cell expansion could not occur due to the lack of Fe. The results of the experiment demonstrated that Fe is a prerequisite for chlorophyll biosynthesis and leaf cell expansion, and GF 677 is a more tolerant rootstock to Fe deficiency compared to Garnem and can be used in peach orchards subjected to Fe deficiency conditions.
耐缺铁的砧木可以用来对付铁黄化损害。在试验中,两只桃(Prunus persica, L.)比较了在缺铁条件下生长的Batsch砧木Garnem和GF 677。对缺铁植株进行3个月的缺铁处理,观察叶片的一些生理和组织学反应。两种砧木接穗直径的相对生长率和根冠干重比均下降。根茎加纳姆和GF 677叶片丙二醛含量分别提高22%和15%。在叶片中,两根砧木的总酚含量均下降。缺铁条件下叶片叶绿素和叶绿素前体浓度降低。缺铁导致木质部中脉和木质部厚度、木质部导管宽度和木质部导管数量减少,其中以甘木减少幅度较大。铁可以促进叶片细胞分裂,但由于缺铁,细胞不能扩增。试验结果表明,铁是叶绿素生物合成和叶片细胞扩增的先决条件,GF 677比Garnem更耐缺铁,可以在缺铁条件下的桃园中使用。
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引用次数: 4
Inoculation of whole-plant maize with viable lactic acid bacteria: effects on silage fermentation, aerobic stability and performance of dairy cows 整株玉米接种活乳酸菌对青贮发酵、好氧稳定性和奶牛生产性能的影响
IF 0.9 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2022-03-30 DOI: 10.13080/z-a.2022.109.011
I. Müller, Jutta C. Kesselring, V. Vrotniakienė, J. Jatkauskas
The study was aimed to evaluate the effect of the addition of a lactic acid bacteria (LAB) inoculant to whole-plant maize at ensiling on the quality, aerobic stability of the silage as well as the intake, milk production and milk composition of Lithuanian black and white dairy cows fed inoculated or not inoculated maize silage diets. The inoculant contained Lactobacillus plantarum , L. brevis and L. kefiri as well as carrier inulin. Maize was ensiled in two silo trenches with or without the inoculant. Chemical and microbiological analyses were carried out on a representative sample of the 5 replicates for each control and inoculated silage at day 92 of storage. At day 92 of ensiling, the silage was exposed to air to determine the aerobic stability. Inoculation caused a reduction in pH value, increased lactate and propionate concentrations and decreased ammonia nitrogen, ethanol and butyrate concentrations. Yeast and mould contamination was reduced in the inoculated silage, which led to an increased aerobic stability compared to the not inoculated one. The inoculated silage had a higher energy concentration, and cows fed on it produced higher fat and energy corrected milk yield from day 69 until end of the experiment (day 92). Milk from cows fed the inoculated silage had a higher fat percentage, similar contents of protein and a lower number of somatic cell counts compared with that from cows fed control. Feed efficiency was improved in cows fed the inoculant treated silage compared to the conventionally produced silage.
本试验旨在评价在全株玉米青贮饲粮中添加乳酸菌(LAB)接种剂对饲喂接种或未接种玉米青贮饲粮的立陶宛黑、白奶牛青贮品质、好氧稳定性以及采食量、产奶量和乳成分的影响。该接种剂含有植物乳杆菌、短乳杆菌和克非利乳杆菌以及载体菊粉。玉米在两个筒仓沟中青贮,有或没有接种剂。在储存第92天,对5个重复中每个对照组和接种青贮的代表性样品进行化学和微生物学分析。青贮第92天,将青贮物暴露于空气中,测定其有氧稳定性。接种引起pH值降低,乳酸和丙酸浓度升高,氨氮、乙醇和丁酸盐浓度降低。与未接种的青贮相比,接种的青贮中酵母和霉菌污染减少,从而导致有氧稳定性增加。接种的青贮饲料能量浓度较高,从试验第69天到试验结束(第92天),饲喂青贮饲料的奶牛脂肪和能量修正产奶量较高。与对照组相比,接种青贮饲料奶牛的乳脂率较高,蛋白质含量相近,体细胞数较低。与常规生产的青贮相比,接种剂处理的青贮提高了奶牛的饲料效率。
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引用次数: 0
Adventitious regeneration of blackberry and raspberry shoots and the assessment of the LED-lighting impact 黑莓和覆盆子芽的不定再生及led照明影响的评估
IF 0.9 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2022-03-30 DOI: 10.13080/z-a.2022.109.007
Ljudmila Loshyna, Оlga Bulko, M. Kuchuk
Blackberry (Rubus fruticosus L.) and raspberry (Rubus idaeus L.) are well known throughout the world due to their nutritional and medicinal importance. Obtaining regenerants is an important stage for the application of cell technologies in plant growing, plant breeding, and genetic engineering. The objective of this study was to determine the best regeneration pathways for understudied blackberry and raspberry cultivars. Adventitious shoot regeneration of thornless blackberry cultivars ‘Smoothstem’, ‘Triple Crown’ and ‘Karaka Black’, and raspberry cultivars ‘Glen Ample’, ‘Gusar’ and ‘Maria’ has been studied depending on the cultivar, type explant, hormonal composition of nutritional medium, and LED lighting. To induce adventitious shoot bud formation, three types of explants: leaves, internodes, and roots obtained from in vitro plants, were cultured in a growth chamber on MS medium supplemented with different concentrations of plant growth regulators. In most cases, regeneration became visible after three weeks of cultivation. Blackberry cultivar ‘Smoothstem’ showed the best results and regenerated at a maximum rate of 73.3% on leaf blades and stem segments on MS supplemented with 2.0 mg L-1 TDZ. The best shoot proliferation rates of raspberries (65.5%) were observed in the ‘Glen Ample’ on root segments at MS medium supplemented with 0.5 mg L-1 ZEA. The blackberry and raspberry explants were exposed under LED lighting with a ratio of quanta red (R) to blue (B) light at 1:1, 1:2, 2:1, 1:4 and 4:1, monochrome red (650–670 nm) and monochrome blue (440–460 nm), and recorded regeneration. Efficient regeneration percentage (>80%) was obtained by the incubation of raspberry and blackberry explants under illumination with a ratio of red to blue spectrum: R2:B1 and R1:B1. Monochrome blue and red light inhibited shoot growth. The obtained results indicate that certain combinations of spectra LED lighting enhances plant morphogenesis. The regeneration system described here will be useful for developing a gene transfer system and can be efficient for selected raspberries and blackberries cultivars.
黑莓(Rubus fruticosus L.)和覆盆子(Rubus idaeus L.)因其营养和药用价值而闻名于世。再生体的获得是细胞技术在植物生长、植物育种和基因工程中应用的一个重要阶段。本研究的目的是确定未被充分研究的黑莓和覆盆子品种的最佳再生途径。根据品种、外植体类型、营养培养基激素组成和LED照明等因素,对无刺黑莓‘Smoothstem’、‘Triple Crown’和‘Karaka Black’以及覆树莓‘Glen Ample’、‘Gusar’和‘Maria’的不定芽再生进行了研究。为了诱导不定芽的形成,将离体植株的叶片、节间和根三种类型的外植体培养在添加不同浓度植物生长调节剂的MS培养基上的生长室中。在大多数情况下,在培养三周后就可以看到再生。在添加2.0 mg L-1 TDZ的MS上,黑莓品种‘Smoothstem’的叶片和茎段再生率最高,达到73.3%。在添加0.5 mg L-1 ZEA的MS培养基上,‘Glen Ample’的树莓根茎增殖率最高,为65.5%。将黑莓和覆盆子外植体置于量子红(R)与蓝(B)光比为1:1、1:2、2:1、1:4和4:1、单色红(650 ~ 670 nm)和单色蓝(440 ~ 460 nm)的LED照明下,记录再生情况。红蓝光谱比分别为R2:B1和R1:B1的光照条件下,覆盆子和黑莓外植体的再生率均大于80%。单色蓝光和红光抑制了芽的生长。研究结果表明,特定的光谱LED照明组合可以促进植物的形态发生。本文所描述的再生系统将有助于建立一个基因转移系统,并可有效地用于选定的覆盆子和黑莓品种。
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引用次数: 1
The first appearance of the citrus flower moth (Prays citri(Millière, 1873)) (Lepidoptera: Praydidae) in Lithuania 立陶宛首次发现柑橘花蛾(Prays citri(milliires, 1873))(鳞翅目:花蛾科)
IF 0.9 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2022-03-30 DOI: 10.13080/z-a.2022.109.012
V. Tamutis, V. Sruoga, L. Česonienė, R. Daubaras
The citrus flower moth ( Prays citri (Millière, 1873)) feeding on calamondin ( Citrus × macrocarpa ) in greenhouses in Lithuania were found on 20 April 2021. Based on a comprehensive analysis of morphological features of the moths, they were identified as Prays citri (Millière, 1873) (Lepidoptera: Praydidae). A small population of moths successfully survived in the unheated greenhouse till November. This species is one of the most harmful pests of citrus plants and can cause substantial economic losses in the Mediterranean basin and some tropical areas of the world. However, it has been detected in some central and even northern European countries in the last two decades. The article provides information about the first appearance of P. citri in Lithuania. Additionally, the paper includes a detailed and originally illustrated morphological description based on the collected specimens and a brief review of species distribution, biology, and the possible risk of this pest spreading in the country.
2021年4月20日,在立陶宛的大棚中发现了柑橘花蛾(Prays citri (milliires, 1873))对calamondin (citrus × macrocarpa)的捕食。综合形态学特征,鉴定其为鳞翅目:prayys citri (milliires, 1873)(鳞翅目:Praydidae)。一小群飞蛾在没有加热的温室里成功地存活到了11月。该物种是柑橘类植物中最有害的害虫之一,在地中海盆地和世界一些热带地区造成巨大的经济损失。然而,在过去的二十年里,在一些中欧甚至北欧国家也发现了这种疾病。本文提供了关于柑橘属在立陶宛首次出现的信息。此外,本文还包括基于收集到的标本的详细和原始插图形态描述,以及物种分布,生物学和该害虫在该国传播的可能风险的简要回顾。
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引用次数: 0
Bacterial canker pathogens present in the materials of Prunus armeniaca propagation 亚美尼亚李繁殖材料中存在的细菌性溃疡病病原体
IF 0.9 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2022-03-30 DOI: 10.13080/z-a.2022.109.010
I. Pánková, V. Krejzar
The aim of this study was to find out whether causal agents of bacterial canker and the premature death of apricot trees are present in the internal tissues of propagating material of various origins. In total, 33 samples of apricot ( Prunus armeniaca L.) scion materials from eight and six samples of rootstocks from four European localities were analysed for the presence of the pathogenic Pseudomonas species. Significant differences were found in the diversity of the culturable bacterial population and the incidence of Pseudomonas bacteria in internal tissues of scion and rootstock buds. In most of the rootstocks, no Pseudomonas bacteria were detected. A total of 148 Pseudomonas -like strains isolated from scion samples were collected mainly from localities F1–F5 (in France) and G1–G2 (in Germany). These strains were clustered into 11 groups by means of fatty acid methyl ester (FAME) analysis; 91.9% of them were able to induce a hypersensitive reaction on tobacco leaves and 37.8% were positive in ice nucleation activity. A set of 89 Pseudomonas strains was characterised by means of Psy -PCR targeting of the Pseudomonas syringae ( Ps ) complex, complex phylogroup (PG), syrB -PCR targeting of the syringomycin synthesis, pathogenicity on detached apricot twigs, and the ability to survive within epiphytic microflora. Pseudomonas strains attributed to PG01, PG04, and PG07–08 were slightly pathogenic to detached apricot twigs. Altogether, 5% of Pseudomonas strains highly pathogenic to detached apricot twigs were isolated from apricot scion samples originated in localities F2, F5, and G1. These strains were attributed to PG02 and PG03, and rpoD sequencing confirmed a similarity to strains of P. syringae pv. syringae and P. amygdali pv. morsprunorum known to be pathogenic to apricot, respectively. The occurrence of these pathogens in buds of scion materials increases the risk of bacterial canker and the premature death of young apricot trees.
摘要本研究旨在探讨不同来源的杏树繁殖材料的内部组织中是否存在引起细菌溃疡病和杏树过早死亡的致病因子。对来自欧洲4个地区的8份杏(Prunus armeniaca L.)接穗材料的33份样品和6份砧木样品进行了病原菌假单胞菌的检测。接穗和砧木芽组织中可培养菌群的多样性和假单胞菌的发病率存在显著差异。大部分砧木未检出假单胞菌。从接穗样品中分离到的148株假单胞菌样菌株主要来自法国的F1-F5和德国的G1-G2地区。采用脂肪酸甲酯(FAME)法将这些菌株聚为11个类群;91.9%的菌株能诱导烟草叶片产生超敏反应,37.8%的菌株冰核活性呈阳性。采用Psy -PCR对丁香假单胞菌(Ps)复合体、复合系统群(PG)、syb -PCR对丁香霉素合成、离体杏枝致病性以及在附生菌群中的生存能力进行了鉴定。PG01、PG04和PG07-08假单胞菌菌株对离体杏枝有轻微致病性。从F2、F5和G1地区的杏接穗样品中分离出5%对离体杏枝具有高致病性的假单胞菌。这些菌株归属于PG02和PG03, rpoD测序证实了它们与丁香假单胞菌pv的相似性。丁香和杏仁果。分别对杏致病。这些病原菌发生在接穗材料的芽中,增加了幼树发生细菌性溃疡病和过早死亡的风险。
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引用次数: 0
Anatomical characteristics of Prunus domestica vascular tissue and their implications for selection programmes 家李维管组织的解剖特征及其对选择程序的意义
IF 0.9 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2022-03-30 DOI: 10.13080/z-a.2022.109.009
L. Zorić, N. Magazin, D. Karanović, Z. Keserović, B. Milić, V. Ognjanov, J. Luković
Knowledge of varieties’ morphological and anatomical characteristics could assist in cultivar selection aimed at higher production, better fruit quality and lower orchard maintenance costs. The aim of the study was to evaluate anatomical characteristics of vascular tissue of shoots, petioles and leaf main veins of plum (Prunus domestica L.) cultivars with a particular emphasis on xylem and vessel hydraulic properties. The results singled out the cultivars with the most desirable combination of anatomical characters in terms of moderate vegetative growth, high yield and good fruit quality (‘Toptaste’ followed by ‘Čačanska lepotica’). A possible application of xylem parameters as preselection criteria in early vegetative period was evaluated, and the link between anatomical properties, tree vigour, cropping potential and fruit quality was discussed. Anatomical traits, especially vessel lumen area, vessel frequency and distribution of vessels in size classes, affect vegetative growth as well as fruit production and quality, since they jointly affect water conductivity and vulnerability to cavitation and drought. Lower shoot vessel lumen values and more numerous small-sized vessels indicated lower vegetative growth, whilst higher vessel lumen values in petiole and lamina induced better lamina photosynthetic tissue water supply, which increased productivity and fruit quality parameters. Obtaining information about the key anatomical traits at early vegetative stage could help breeders to predict the ultimate tree vigour.
了解品种的形态和解剖特征有助于品种选择,以提高产量,提高果实质量和降低果园维护成本。摘要研究了李树(Prunus domestica L.)不同品种的茎、叶柄和叶主脉的维管组织的解剖学特征,重点研究了木质部和导管的水力特性。结果显示,在营养生长适中、产量高、果实品质优良的解剖性状组合方面,选出了最理想的品种(Toptaste其次是Čačanska lepotica)。探讨了木质部参数作为营养早期预选标准的可能性,并讨论了木质部解剖特性、树活力、种植潜力与果实品质之间的联系。解剖性状,特别是血管管腔面积、血管频率和血管在大小类别中的分布,影响营养生长以及果实的生产和品质,因为它们共同影响水的导电性以及对空化和干旱的脆弱性。茎部导管管腔值越低,小导管数量越多,表明营养生长越慢,而叶柄和叶片导管管腔值越高,叶片光合组织供水量越好,从而提高了产量和果实品质参数。获得营养早期关键解剖性状的信息有助于育种者预测最终的树势。
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引用次数: 0
Variations of genotypes of Vicia species as influenced by seed phenolic compounds and antioxidant activity 油菜种子酚类化合物和抗氧化活性对基因型变异的影响
IF 0.9 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2022-03-30 DOI: 10.13080/z-a.2022.109.005
H. Orak, M. Karamać, R. Amarowicz, A. Orak, M. Janiak, Hazım Serkan Tenikecier
The phenolic compounds and antioxidant activity of different Vicia species, which are cultivated in different areas of Turkey, and the diversity between analysed characters were investigated. For this purpose, 9 genotypes from three Vicia species: common vetch ( Vicia sativa L.), Hungarian vetch ( Vicia pannonica Crantz.) and Narbon vetch ( Vicia narbonensis L.), were used. The experiment was carried out to determine total phenolic content (TPC), content of individual phenolic compounds, to determine ABTS •+ and DPPH • scavenging activity and ferric-reducing antioxidant power (FRAP) in methanol and acetone extracts of seeds. The TPC of vetch extracts was in range 11.18–30.42 mg GAE g -1 (in methanol extract) and 17.05–59.88 mg GAE g -1 (in acetone extract). Two V. sativa genotypes Cvoe and Cvke stood out among the others with regard to high TPC and antioxidant activity. They also had the highest content of individual hydroxybenzoic acids and flavones. All extracts of V. narbonensis genotypes were characterised by absence of flavones and low TPC and antioxidant activity. GGE biplot analysis revealed the differences of Vicia genotypes based on phenolic compounds and antioxidant activity. The significant correlations among TEAC, FRAP and DPPH • scavenging activity and the content of hydroxybenzoic acids were found in both methanol and acetone extracts ( P < 0.01). The genotypes were divided into three clusters in acetone extract and two clusters in methanol extract with similarity above 60% in each group by a hierarchical cluster analysis. These results demonstrated that the genotypic differences of Vicia species in terms of TPC and antioxidant activity can be a tool for feed technology studies for animal nutrition, animal welfare and meat quality.
研究了土耳其不同地区栽培的紫薇属植物的酚类化合物和抗氧化活性,以及各性状间的差异。本研究采用了3种紫薇属植物的9个基因型:普通紫薇(Vicia sativa L.)、匈牙利紫薇(Vicia pannonica Crantz.)和纳邦紫薇(Vicia narbonensis L.)。测定种子甲醇和丙酮提取物中总酚含量(TPC)、单个酚类化合物含量,以及对ABTS•+和DPPH•的清除活性和铁还原抗氧化能力(FRAP)。紫菀提取物的TPC分别为11.18 ~ 30.42 mg GAE g -1(甲醇提取物)和17.05 ~ 59.88 mg GAE g -1(丙酮提取物)。两种苜蓿基因型Cvoe和Cvke在TPC和抗氧化活性方面表现突出。对羟基苯甲酸和黄酮的含量也最高。各基因型提取物均不含黄酮类化合物,TPC和抗氧化活性较低。GGE双标图分析揭示了紫薇基因型在酚类化合物和抗氧化活性方面的差异。甲醇和丙酮提取物的TEAC、FRAP和DPPH•清除活性与羟基苯甲酸含量均呈极显著相关(P < 0.01)。通过层次聚类分析,将各基因型在丙酮提取物中分为3个聚类,在甲醇提取物中分为2个聚类,每组相似性均在60%以上。这些结果表明,不同种类紫薇在TPC和抗氧化活性方面的基因型差异可为动物营养、动物福利和肉品质的饲料技术研究提供依据。
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引用次数: 4
Soil yeasts promoting plant growth: benefits for the development of common wheat and white mustard 促进植物生长的土壤酵母:对普通小麦和白芥菜的生长有益
IF 0.9 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2022-03-30 DOI: 10.13080/z-a.2022.109.004
D. Radić, Vera Karličić, Jelena S. Đorđević, Jelena Jovičić-Petrović, I. Kljujev, B. Lalević, V. Raičević
A large number of soil microorganisms are characterized as plant growth promoting, but there seems to be a lack of comprehensive knowledge regarding plant growth promoting soil yeasts. The aim of the experiment was to analyse the properties of three yeast species: Schwanniomyces occidentalis BK0302D, Cyberlindnera saturnus CK2404I and Candida tropicalis 2TD2912B, important for plant growth (ammonium sulphate transformation, phosphorus, potassium and zinc dissolution), and to evaluate the effect of yeast on the growth of common wheat and white mustard seedlings after seeds’ inoculation. Common wheat and white mustard seeds were inoculated with the selected yeasts. The final measurements showed that the highest amount of nitrate (10.40 μg mL-1 NO3 −) was produced by C. saturnus CK2404I, while S. occidentalis BK0302D solubilized the largest amount of phosphorus (63.70 μg mL-1 P). All three strains are marked as potassium and zinc solubilizers with both acid and alkaline phosphatase activity. This is the first report on S. occidentalis and C. tropicalis ability to solubilize insoluble potassium and zinc, and C. saturnus ability to solubilize insoluble phosphorus, potassium and zinc. Also, C. tropicalis 2TD2912B exhibited high antagonistic activity (66% growth inhibition) toward Botrytis cinerea. In vivo trial was conducted in a low-nutrient substrate, and S. occidentalis BK0302D was found to have the most considerable influence on common wheat biomass production (34% increase). White mustard inoculation with C. saturnus CK2404I resulted in a 4-fold higher biomass production, while S. occidentalis BK0302D induced a 2-fold increase. The presented results confirmed the multi-functional plant growth promoting characteristics of the tested yeasts and their potential for broad application from conventional agriculture on low-nutrient soils to revegetation of disturbed substrates.
大量土壤微生物具有促进植物生长的特性,但对促进植物生长的土壤酵母缺乏全面的认识。本试验旨在分析对植物生长具有重要作用的3种酵母:西雪菌BK0302D、Cyberlindnera saturnus CK2404I和热带念珠菌2TD2912B的特性(硫酸铵转化、磷、钾、锌溶解),并评价酵母接种种子后对普通小麦和白芥菜幼苗生长的影响。用选定的酵母接种普通小麦和白芥菜种子。结果表明,C. saturnus CK2404I产生的硝态氮含量最高(10.40 μg mL-1 NO3−),而S. occidentalis BK0302D溶解的磷含量最高(63.70 μg mL-1 P)。3株菌株均具有酸性和碱性磷酸酶活性,是钾和锌的增溶剂。本文首次报道了西花楸和热带花楸对不溶性钾和锌的溶解能力,以及饱和花楸对不溶性磷、钾和锌的溶解能力。此外,C. tropical alis 2TD2912B对葡萄灰霉病(Botrytis cinerea)具有较高的拮抗活性(66%的生长抑制)。在低营养基质下进行体内试验,发现西曲霉BK0302D对普通小麦生物量产量的影响最大(增加34%)。接种C. saturnus CK2404I和S. occidentalis BK0302D的白芥菜生物量分别提高了4倍和2倍。研究结果证实了所试酵母菌具有促进植物生长的多功能特性,以及它们在低营养土壤的常规农业和受干扰基质的植被恢复方面的广泛应用潜力。
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引用次数: 1
Effect of pre-sowing priming of seeds with exogenous abscisic acid on endogenous hormonal balance of spelt wheat under heat stress 播前外源脱落酸对热胁迫下小麦内源激素平衡的影响
IF 0.9 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2022-03-20 DOI: 10.13080/z-a.2022.109.003
Iryna V. Kosakivska, Lesya V. Voytenko, Valentyna A. Vasyuk, Mykola M. Shcherbatiuk
Pre-sowing priming of seeds with exogenous phytohormones affects plant growth, development and resistance. However, it remains unclear, whether the effect of exogenous hormones on growth is direct, or whether it is associated with changes in the level and distribution of endogenous hormones. The dynamics and distribution of endogenous abscisic (ABA), indole-3-acetic (IAA), gibberellic (GA3) and salicylic (SA) acids in spelt wheat (Triticum spelta L., ‘Frankenkorn’) plants grown from seeds primed with ABA (10-6 M) were analysed. Fourteenday-old, water-germinated and ABA-primed plants that had been exposed to a heat stress (2 h at +40°C) and 21-day-old plants after recovery were studied. Endogenous ABA, IAA, GA3 and SA were found to dominate in shoots of 14-day-old plants. On the 21st day, the pattern of distribution of all phytohormones, except GA3, remained unchanged. However, most of the endogenous GA3 was transferred to the roots. Pre-sowing priming of seeds with exogenous ABA induced changes in the balance of endogenous hormones. In shoots and roots of 14-day-old water-germinated, heat-stressed plants, accumulation of endogenous ABA and SA was enhanced, and the content endogenous of IAA and GA3 decreased. In the recovery period, the amount of SA in 21-day-old plants increased, and the ABA content was reduced; endogenous GA3 and IAA accumulated in the roots. In 14-day-old, exogenous ABA-primed plants, after heat stress maximal concentrations of endogenous ABA were recorded in shoots (46.8 ± 2.3 ng g-1 FW) and roots (32.3 ± 1.6 ng g-1 FW). In roots of 14-day-old exogenous ABA-primed, unstressed plants, the content of endogenous IAA reached a maximum (53.9 ± 2.7 ng g-1 FW). The maximum concentration (39.7 ± 2.0 ng g-1 FW) of endogenous GA3 was recorded on the 21 st day after recovery in roots of exogenous ABA-primed plants. The SA content in shoots and roots of exogenous ABA-primed, heat-stressed plants increased by 31% and 44.7%, respectively, while in non-primed ones – by 15.9% and 12.8%. In summary, the pre-sowing priming of spelt wheat seeds with exogenous ABA induced differentiated prolonged changes in the dynamics and distribution of endogenous ABA, IAA, GA3 and SA in shoots and roots of 14and 21-day-old water-germinated plants (controls) and high temperature (heat stress) conditions. This suggests that the response to heat stress is associated with changes in the level and distribution of endogenous hormones in young spelt wheat plants caused by pre-sowing priming of seeds with exogenous ABA.
播种前外源激素对植物的生长发育和抗性有影响。然而,外源激素对生长的影响是直接的,还是与内源激素水平和分布的变化有关,目前尚不清楚。分析了外源ABA、吲哚-3-乙酸(IAA)、赤霉素(GA3)和水杨酸(SA)在小麦(Triticum spelta L., ' Frankenkorn ')中生长的动态和分布。研究了14日龄、水萌发和aba诱导的植物,这些植物暴露于高温胁迫(+40°C下2小时)和恢复后21日龄的植物。内源ABA、IAA、GA3和SA在14日龄植株的芽中占主导地位。在第21天,除GA3外,其余植物激素的分布格局保持不变。然而,大部分内源GA3被转移到根部。播前注入外源ABA诱导种子内源激素平衡的变化。在14 d龄水萌发、热胁迫植株的茎和根中,内源ABA和SA积累增加,内源IAA和GA3含量降低。在恢复期,21日龄植株中SA含量增加,ABA含量降低;内源GA3和IAA在根系积累。在14日龄外源ABA诱导的植株中,热胁迫后外源ABA在茎部(46.8±2.3 ng g-1 FW)和根部(32.3±1.6 ng g-1 FW)的浓度最高。在外源aba诱导的14日龄非胁迫植株根系中,内源IAA含量最高(53.9±2.7 ng g-1 FW)。外源aba诱导植株恢复后第21天,其根内GA3的最高浓度为(39.7±2.0 ng g-1 FW)。经外源aba处理的热胁迫植株的茎部和根部SA含量分别增加了31%和44.7%,未处理的植株分别增加了15.9%和12.8%。综上所述,外源ABA在小麦种子播前引发了14和21日龄水萌发植株(对照)和高温(热胁迫)条件下茎部和根部内源ABA、IAA、GA3和SA的动态和分布变化。这表明,小麦幼苗对热胁迫的响应与播种前外源ABA引发的内源激素水平和分布的变化有关。
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引用次数: 6
Autochthonous plant growth-promoting rhizobacteria enhance Thymus vulgaris growth in well-watered and drought-stressed conditions 原生植物促生根瘤菌在水分充足和干旱胁迫条件下促进寻常胸腺的生长
IF 0.9 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2021-12-06 DOI: 10.13080/z-a.2021.108.044
D. Stamenov, S. Djuric, T. Hajnal-Jafari, S. Andjelkovič
The use of plant growth-promoting rhizobacteria (PGPR) in the production of medicinal plants is crucial, because agricultural chemicals are no longer acceptable in their production. This paper discusses the results of a recent study undertaken to isolate and characterize PGPR isolates of Bacillus, Pseudomonas and Azotobacter from common thyme (Thymus vulgaris L.) rhizospheric soil and monitor the effect of their application on seed germination and plant growth. The effect of selected isolates on seed germination and initial growth of common thyme was examined in controlled conditions. The impact of the isolates on the content of biochemical stress markers (total phenols and lipid peroxidation intensity) in germinated seeds was determined. The influence of the isolates on the plant growth under well-watered conditions (watered to 80% of water holding capacity (WHC)) and under water deficit stress (watered to 40% of WHC) was evaluated by measuring plant root and stem length in semi-controlled conditions. This study confirmed that indigenous rhizospheric bacteria of common thyme have multiple plant growthpromoting (PGP) properties. Among Bacillus 10 isolates, Pseudomonas 12 isolates and Azotobacter 9 isolates, only Pseudomonas isolate (P53) had all the tested PGP properties. The applied isolates had a positive effect on the examined plant growth parameters. The highest percentage of germination was determined in the treatment with P53 isolate (96%). The highest response for vigour index was observed with isolate A1 (3807%). All isolates, except B58 and B60, reduced stress by lowering the amount of both or at least one stress related molecules. The results of the experiment led to the conclusion that isolates Azotobacter sp. A1 and Pseudomonas sp. P53, both ACC-deaminase-producing bacteria, have the best effect on plant growth under well-watered and drought-stressed conditions, which indicates their potential to be used as a biofertiliser for promoting common thyme growth.
在药用植物的生产中使用促进植物生长的根瘤菌(PGPR)是至关重要的,因为农业化学品在药用植物的生产中已不再被接受。本文讨论了从普通百里香根际土壤中分离和鉴定芽孢杆菌、假单胞菌和固氮菌PGPR分离株的研究结果,并监测了它们对种子萌发和植物生长的影响。在控制条件下考察了所选菌株对普通百里香种子萌发和初始生长的影响。测定菌株对发芽种子生化胁迫标志物(总酚和脂质过氧化强度)含量的影响。在半控制条件下,通过测定植株的根和茎长,评价了各菌株在水分充足条件下(水分保持量80%)和水分亏缺胁迫下(水分保持量40%)对植株生长的影响。本研究证实了百里香根际原生细菌具有多种植物促生长(PGP)特性。在芽孢杆菌10分离株、假单胞菌12分离株和固氮杆菌9分离株中,只有假单胞菌(P53)具有全部PGP特性。施用的分离物对所测植物的生长参数有积极的影响。P53分离物处理的发芽率最高(96%)。A1分离物对活力指数的响应最高(3807%)。除B58和B60外,所有菌株都通过降低两种或至少一种与胁迫相关的分子的数量来降低胁迫。实验结果表明,产acc -脱氨酶的细菌Azotobacter sp. A1和Pseudomonas sp. P53在水分充足和干旱胁迫条件下对植物生长的影响最好,这表明它们有潜力作为促进百里香生长的生物肥料。
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引用次数: 0
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