Plant Stress最新文献

英文中文

Kaolinite and calcite foliar treatments induce physiological changes in cherry tree leaves 高岭石和方解石叶面处理可引起樱桃树叶片的生理变化

IF 6.8 Q1 PLANT SCIENCES

Plant Stress

Pub Date : 2026-01-01 DOI: 10.1016/j.stress.2026.101235

Tamara González-Illanes , Olivia Martínez-Lama , Héctor A. Bahamonde , Alberto Carrión-Antolí , Estanis Torres , Victoria Fernández

Foliar particle treatments can improve plant stress tolerance, but the underlying mechanisms remain unclear to date. In this study, the effect of supplying calcite and kaolinite was evaluated by treating leaves of field-grown cherry trees (Prunus avium var. Sweetheart) and evaluating their effects. Leaves were dipped in 5, 10 or 15% (w/v) calcite and kaolinite suspensions of similar particle size. Stomatal conductance (G_s), leaf temperature (T_leaf) and chlorophyll fluorescence were regularly monitored, while leaf mineral elements were determined at the end of the experimental period. The surface features, wettability and surface free energy of adaxial and abaxial leaf surfaces were characterised. Foliar kaolinite treatments increased tissue aluminium (Al) and silicon (Si) concentrations, with minor calcium (Ca) increments associated with calcite application. In addition, mineral particle supply changed the leaf concentration of other elements, such as potassium (K), magnesium (Mg), sulphur (S), boron (B), iron (Fe) or manganese (Mn). Chlorophyll fluorescence was not affected by the treatments, but short-term effects on G_s and T_leaf lasting only for few days after foliar application, were recorded. The supply of particle suspensions with surfactant, led to higher G_s values, while T_leaf generally decreased only for few days after foliar application. It is concluded that foliar particle treatments may trigger beneficial physiological changes after being exposed to transient stress situations, but further investigations are required for improving their effectiveness.

叶面颗粒处理可以提高植物的抗逆性，但其机制尚不清楚。本研究通过对大田樱桃树（Prunus avium var.甜心）叶片进行处理，评价了方解石和高岭石的补加效果。叶片分别浸在5%、10%或15% （w/v）的相似粒径方解石和高岭石悬浮液中。定期监测气孔导度（Gs）、叶片温度（Tleaf）和叶绿素荧光，并在试验结束时测定叶片矿物元素。表征了叶片正面和背面的表面特征、润湿性和表面自由能。叶面高岭石处理增加了组织铝（Al）和硅（Si）浓度，方解石处理增加了少量钙（Ca）浓度。此外，矿物颗粒的供应改变了其他元素的浓度，如钾(K)、镁（Mg）、硫(S)、硼(B)、铁（Fe）或锰（Mn）。叶绿素荧光不受处理的影响，但对Gs和叶片的短期影响仅持续数天。添加表面活性剂的颗粒悬浮液会导致g值升高，而叶片在施用后的几天内通常会下降。综上所述，叶片颗粒处理可能会引起瞬时胁迫后有益的生理变化，但需要进一步研究以提高其有效性。

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引用次数: 0

Integrated physiological, ionic, and transcriptomic screening over four years identifies highly salt tolerant barley genotypes for arid agroecosystems using field lysimeters 综合生理、离子和转录组筛选四年，利用田间溶盐仪确定了干旱农业生态系统的高耐盐大麦基因型

IF 6.8 Q1 PLANT SCIENCES

Plant Stress

Pub Date : 2026-01-01 DOI: 10.1016/j.stress.2026.101238

Wessam A. Abdelrady , Yulin Cui , B.K.H.P. Rodrigo , Elsayed E. Elshawy , Ashgan M. Abd El-Azeeme , Mohamed Mansour , Jiasheng Xu , Aziza A. Aboulila , Fanrong Zeng , Imran Haider Shamsi

Soil salinization is accelerating across the world’s drylands, jeopardizing both crop production and the ecological services delivered by agroecosystems. This study aimed to identify the elite salt-tolerant barley genotypes and provide insights for breeding new barley varieties with high salt tolerance. Initially, 10 genotypes were selected from a pool of 64 based on their superior performance under multiple salinity stress conditions (0, 8, 12, and 16 dS/m) during the 2020/2021 and 2021/2022 growing seasons. These genotypes were further evaluated in soil pot experiments, incorporating physiological, molecular, and elemental analyses. Of them, Lines 2 and 5 demonstrated superior salt tolerance, exhibiting the highest geometric mean productivity (GMP), salt tolerance index (STI), and low-stress susceptibility index (SSI). These lines also exhibited lower reactive oxygen species (ROS) accumulation and better ion balance than sensitive varieties, such as Giza 129 and Giza 135, which showed a 29- and 33-fold increase in shoot Na⁺ content, respectively. Genetic screening with 20 SSR markers identified 62 alleles, 61 of which were polymorphic. Transcriptomic analysis revealed that tolerant genotypes (Lines 2 and 5) exhibited broader stress-response mechanisms, with differential gene expression in stress-related, oxidative stress, and metabolic pathways. This study highlights the complexity of salt tolerance in barley and demonstrates the importance of integrating phenotypic, physiological, and molecular analyses to identify salt-tolerant genotypes. Lines 2 and 5 were the most salt-tolerant, making them valuable candidates for targeted breeding programs in saline environments. Deploying such genotypes can reduce the freshwater footprint of barley cultivation and help stabilize yields on marginal lands, thereby enhancing the resilience of arid agro-ecosystems threatened by ongoing salinity expansion.

世界旱地的土壤盐碱化正在加速，危及作物生产和农业生态系统提供的生态服务。本研究旨在鉴定优质耐盐大麦基因型，为选育高耐盐大麦新品种提供参考。最初，在2020/2021和2021/2022生长季，根据不同盐度胁迫条件（0、8、12和16 dS/m）下的优异表现，从64个基因型中筛选出10个基因型。这些基因型在土壤盆栽实验中进行了进一步的评估，包括生理、分子和元素分析。其中，品系2和品系5表现出优异的耐盐性，具有最高的几何平均生产力（GMP）、耐盐指数（STI）和低胁迫敏感性指数（SSI）。与敏感品种吉萨129和吉萨135相比，这些品系的活性氧（ROS）积累更少，离子平衡更好。吉萨129和吉萨135的茎部Na+含量分别增加29倍和33倍。用20个SSR标记对62个等位基因进行遗传筛选，其中61个等位基因为多态性。转录组学分析显示，耐受性基因型（line2和line5）表现出更广泛的应激反应机制，在应激相关、氧化应激和代谢途径中具有差异的基因表达。这项研究强调了大麦耐盐性的复杂性，并证明了综合表型、生理和分子分析来鉴定耐盐基因型的重要性。2号和5号系是最耐盐的，使它们成为盐环境中有价值的育种计划的候选者。利用这些基因型可以减少大麦种植的淡水足迹，并有助于稳定边际土地的产量，从而增强受持续盐度扩大威胁的干旱农业生态系统的恢复力。

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引用次数: 0

Deciphering synergy of beneficial bacteria and quercetin dihydrate for enhanced resilience in Chinese Kale against combined cadmium and salinity stress 有益菌和二水合槲皮素增强芥蓝抗镉盐复合胁迫的协同作用

IF 6.8 Q1 PLANT SCIENCES

Plant Stress

Pub Date : 2026-01-01 DOI: 10.1016/j.stress.2025.101205

Bareera Munir , Waheed Akram , Areeba Rehman , Waheed Ullah Khan , Nasim Ahmad Yasin , Iqra Munir , Guihua Li

Degradation of agricultural lands due to the accumulation of trace elements and salinity is anticipated to emerge as a critical issue impeding sustainable agricultural production and food security. This study aimed to mitigate combined salinity and cadmium metal stress in Chinese kale (Brassica oleracea var. alboglabra) using Quercetin dihydrate (QDH) and Bacillus strains (Bacillus cereus Z-01 and Bacillus simplex Z-09). The potting mix was artificially spiked with Cd metal (90 mg/kg soil) and subjected to salinity stress (100 mM). QDH (50 µM) was applied as foliar spray, whereas bacteria were provided as a soil drench in different combinations. The onset of Cd and salinity stress significantly decreased (P < 0.05) shoot length (32.5%), root length (44.8%), shoot dry biomass (55.17%), and root dry biomass (50.1%) compared with control. The combined application of strain Z-09 and QDH performed best, restoring the plant growth parameters to non-stressed levels. Z-09 + QDH significantly increased shoot length (36.21%), root length (37.47%), shoot dry biomass (58.2%), and root dry biomass (25.3%) compared with the stress control plants. Evaluation of photosynthetic pigment levels and enzyme activities showed that Z-09 + QDH application under combined stress increased chlorophyll a (50.8%), chlorophyll b (60.3%), and total chlorophyll (54.2%) contents and antioxidant enzyme activities in Kale plants under stress conditions. In-silico studies were performed to further support the role of QDH in stress mitigation, which confirmed strong interactions of QDH with key stress-responsive proteins (MAPK, DREB, BHLH, and SOS1),. To elucidate the metabolic contribution, non-targeted metabolomic analysis was performed which showed that metabolites with varying abundance belonged to TCA cycle, carbon metabolism, amino acids metabolism, and phenylpropanoid pathways, along with notable accumulation of osmolytes, flavonoids, and organic acids that contributed to stress mitigation. Our findings indicated a synergistic action of quercetin dihydrate and beneficial bacteria to enhance cadmium and salinity tolerance in Chinese kale by activating both biochemical defenses and metabolic adjustments.

由于微量元素和盐分的积累而导致农地退化，预计将成为阻碍可持续农业生产和粮食安全的一个关键问题。利用二水合槲皮素（QDH）和蜡样芽孢杆菌（Bacillus cereus Z-01）和单纯芽孢杆菌（Bacillus simplplex Z-09）对芥蓝（Brassica oleracea vart . alboglabra）的盐镉联合胁迫进行了研究。在盆栽混合料中人工添加镉金属（90 mg/kg土壤），并进行100 mM的盐胁迫。QDH（50µM）作为叶面喷雾施用，而细菌以不同组合作为土壤淋雨。与对照相比，Cd和盐度胁迫显著降低了茎长（32.5%）、根长（44.8%）、茎干生物量（55.17%）和根干生物量（50.1%）（P < 0.05）。菌株Z-09与QDH配施效果最好，使植株生长参数恢复到非胁迫水平。与胁迫对照相比，Z-09 + QDH显著提高了茎长（36.21%）、根长（37.47%）、茎干生物量（58.2%）和根干生物量（25.3%）。对光合色素水平和酶活性的评价表明，复合胁迫下施用Z-09 + QDH可提高甘蓝叶片叶绿素a（50.8%）、叶绿素b（60.3%）、总叶绿素含量（54.2%）和抗氧化酶活性。为了进一步支持QDH在缓解压力中的作用，我们进行了计算机研究，证实了QDH与关键的应激反应蛋白（MAPK、DREB、BHLH和SOS1）有很强的相互作用。为了阐明代谢的作用，进行了非靶向代谢组学分析，结果表明，不同丰度的代谢物属于TCA循环、碳代谢、氨基酸代谢和苯丙素途径，同时还有显著的渗透物、类黄酮和有机酸的积累，这些代谢有助于缓解应激。研究结果表明，槲皮素和有益菌通过激活生化防御和代谢调节，协同提高芥蓝对镉和盐的耐受性。

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引用次数: 0

Transcriptomic and metabolomic insights into the mechanisms of pest resistance in cowpea (Vigna unguiculata L.) 豇豆（Vigna unguiculata L.）抗虫机制的转录组学和代谢组学研究

IF 6.8 Q1 PLANT SCIENCES

Plant Stress

Pub Date : 2026-01-01 DOI: 10.1016/j.stress.2026.101240

Xueqiang Wang , Jiantao Wu , Siqi Xia , Jun Li , Qinggan Liang , Jing Xie , Shaoying Wu

Cowpea is a vital protein source in semi-arid regions yet suffers annual yield losses ranging from 15% to 60% due to the American serpentine leafminer. Comparative analyses between highly resistant cultivars, namely May Pea Black (R1) and LD03 (R2), and susceptible varieties revealed distinct defensive approaches. R1 triggers a rapid chemical defense involving early activation of jasmonic acid (JA) signaling that promotes phenylpropanoid and flavonoid biosynthesis. Conversely, R2 implements structural reinforcement mediated by MAPK cascades that lead to alkaloid synthesis and cell wall strengthening while gradually increasing salicylic acid (SA) signaling. Integration of multi-omics data confirmed the coordinated regulation of the flavonoid pathway in R1 and identified VuLTR1 and VuLTR2 as significant regulators. These results indicate that resistance is shaped by temporal dynamics and JA-SA crosstalk, identifying CHS, F3H, and VuLTR2 as primary candidates for pyramiding defenses in cowpea breeding programs.

在半干旱地区，豇豆是一种重要的蛋白质来源，但由于美洲蛇形叶蝉的影响，豇豆每年的产量损失在15%到60%之间。高抗性品种梅豆黑（R1）和LD03 （R2）与易感品种的比较分析显示，防御途径不同。R1触发快速的化学防御，涉及茉莉酸（JA）信号的早期激活，促进苯丙酸和类黄酮的生物合成。相反，R2实现由MAPK级联介导的结构强化，导致生物碱合成和细胞壁强化，同时逐渐增加水杨酸（SA）信号。整合多组学数据证实了R1中黄酮类通路的协同调控，并鉴定出VuLTR1和VuLTR2为重要调控因子。这些结果表明，抗性是由时间动态和JA-SA串扰形成的，确定了CHS， F3H和VuLTR2是豇豆育种计划中金字塔防御的主要候选者。

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引用次数: 0

Seed biopriming for stress resilience: Harnessing stress-adapted and growth-promoting endophytes under drought and salinity 胁迫恢复的种子生物灌浆：利用干旱和盐胁迫下适应和促进生长的内生菌

IF 6.8 Q1 PLANT SCIENCES

Plant Stress

Pub Date : 2026-01-01 DOI: 10.1016/j.stress.2026.101225

Wiwiek Harsonowati , Kartika Kartika , Arinal Haq Izzawati Nurrahma , Jati Purwani , Baswarsiati Baswarsiati , Amisnaipa Amisnaipa , Sri Widawati , Suliasih Suliasih , Rashid Iqbal , Saltanat Aghayeva , Sajid Ullah

Climate change, driven by both natural processes and human activities, disrupts crop production patterns, threatens global food security, and intensifies abiotic stresses in agricultural systems. Our comprehensive bibliometric analysis of research articles published in the Scopus database from 2014 to 2024 reveals that drought and salinity are the most prevalent abiotic stressors induced by climate change. These stressors negatively impact seed germination, plant growth, and productivity, resulting in substantial yield losses. To address these challenges, there is an urgent need for sustainable and economically viable strategies to enhance crop resilience and adaptability to abiotic stresses. One promising solution is the use of plant-associated endophytic microbes, which play a vital role in helping plants adapt to challenging environmental conditions. This review highlights seed biopriming with stress-adapted, growth-promoting endophytes as an innovative, cost-effective, and environmentally friendly strategy to improve plant resilience against drought and salinity. We explore the morpho-physiological, transcriptional, metabolic, and biochemical responses of plants to these stresses and examine the role of endophyte-mediated seed priming in mitigating the impacts of drought and salinity. Key mechanisms discussed include seed germination and growth promotion, phytohormone biosynthesis, osmotic adjustment, antioxidant modulation, and the upregulation of stress-responsive genes, such as those involved in redox signalling, mitogen-activated protein kinase (MAPK) pathways, and interactions with other plant hormone networks. The potential of endophyte-primed seeds to enhance plant tolerance under stress conditions represents a significant advancement in climate-smart agriculture, offering a practical solution to ensuring food security in the face of climate change.

由自然过程和人类活动共同驱动的气候变化破坏了作物生产模式，威胁到全球粮食安全，并加剧了农业系统中的非生物压力。我们对2014 - 2024年Scopus数据库中发表的研究论文进行了综合文献计量分析，发现干旱和盐度是气候变化引起的最普遍的非生物胁迫因素。这些压力源对种子萌发、植物生长和生产力产生负面影响，导致大量产量损失。为了应对这些挑战，迫切需要制定可持续和经济上可行的战略，以提高作物对非生物胁迫的抗逆性和适应性。一个有希望的解决方案是利用植物相关的内生微生物，它们在帮助植物适应具有挑战性的环境条件方面起着至关重要的作用。这篇综述强调了利用适应胁迫、促进生长的内生菌进行种子生物灌溉是一种创新、经济、环保的策略，可以提高植物对干旱和盐度的抵御能力。我们探索了植物对这些胁迫的形态生理、转录、代谢和生化反应，并研究了内生菌介导的种子启动在减轻干旱和盐度影响中的作用。讨论的关键机制包括种子萌发和生长促进、植物激素生物合成、渗透调节、抗氧化调节和应激反应基因的上调，如那些参与氧化还原信号、丝裂原活化蛋白激酶（MAPK）途径的基因，以及与其他植物激素网络的相互作用。内生菌种子在逆境条件下增强植物耐受性的潜力是气候智能型农业的重大进步，为在气候变化面前确保粮食安全提供了切实可行的解决方案。

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IF 6.8 Q1 PLANT SCIENCES

Plant Stress

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IF 6.8 Q1 PLANT SCIENCES

Plant Stress

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IF 6.8 Q1 PLANT SCIENCES

Plant Stress

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IF 6.8 Q1 PLANT SCIENCES

Plant Stress

Pub Date : 2026-01-01

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IF 6.8 Q1 PLANT SCIENCES

Plant Stress

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