Physiological and metabolomic responses of bermudagrass (<scp><i>Cynodon dactylon</i></scp>) to alkali stress

Ye, Tiantian; Wang, Yanping; Feng, Yun; Chan, Zhulong

doi:10.1111/ppl.13209

Cited by 35 publications

(17 citation statements)

References 39 publications

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“…The response to cold stress in plants is a process by which plants adapt to the environment through gene expression and metabolism [35][36][37][38]. In this study, the physiological changes in C. maxima after cold treatment revealed considerable variation related to cold stress.…”

Section: Discussionmentioning

confidence: 74%

Integrating transcriptome and metabolome analyses of the response to cold stress in pumpkin (Cucurbita maxima)

Duan

et al. 2021

PLoS ONE

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Cucurbita maxima belong to the genus Cucurbita and are of nutritional and economic importance. Physiological activity, transcriptome, and metabolome analyses of leaf samples from the C. maxima inbreding line IL7 treated at 5 °C and 25 °C were performed. Cold stress resulted in a significant increase in the malondialdehyde content, relative electrical conductivity, soluble protein, sugar content, and catalase activity. A total of 5,553 differentially expressed genes were identified, of which 2,871 were up-regulated and 2,682 down-regulated. In addition, the transcription of differentially expressed genes in the plant hormone signal transduction pathway and transcription factor families of AP2/ERF, bHLH, WRKY, MYB, and HSF was activated. Moreover, 114 differentially expressed metabolites were identified by gas chromatography time-of-flight mass spectrometry, particularly through the analysis of carboxylic acids and derivatives, and organooxygen compounds. The demonstration of a series of potential metabolites and corresponding genes highlighted a comprehensive regulatory mechanism. These findings will provide novel insights into the molecular mechanisms associated with the response to cold stress in C. maxima.

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Section: Discussionmentioning

confidence: 74%

Integrating transcriptome and metabolome analyses of the response to cold stress in pumpkin (Cucurbita maxima)

Duan

et al. 2021

PLoS ONE

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“…For example, under mild alkali stress, bermudagrass slows metabolic processes such as carbohydrate degradation and N metabolism to maintain basic growth but with a slower growth rate. Moderately and severely alkali-stressed plants will accumulate relatively higher amounts of carbohydrates and significantly increase ROS and MDA contents (Ye et al, 2021). In short, the osmotic stress, oxidative stress, ionic toxicity and high-pH stress caused by mixed salt-alkali stress can destroy the cell membrane structure, inactivate enzyme activity, disrupt the ion balance in plant cells etc.…”

Section: Introductionmentioning

confidence: 99%

Response Mechanisms of Plants Under Saline-Alkali Stress

2021

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As two coexisting abiotic stresses, salt stress and alkali stress have severely restricted the development of global agriculture. Clarifying the plant resistance mechanism and determining how to improve plant tolerance to salt stress and alkali stress have been popular research topics. At present, most related studies have focused mainly on salt stress, and salt-alkali mixed stress studies are relatively scarce. However, in nature, high concentrations of salt and high pH often occur simultaneously, and their synergistic effects can be more harmful to plant growth and development than the effects of either stress alone. Therefore, it is of great practical importance for the sustainable development of agriculture to study plant resistance mechanisms under saline-alkali mixed stress, screen new saline-alkali stress tolerance genes, and explore new plant salt-alkali tolerance strategies. Herein, we summarized how plants actively respond to saline-alkali stress through morphological adaptation, physiological adaptation and molecular regulation.

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“…Interestingly, we also observed an accumulation of photorespiration metabolites, such as serine and glycolate, which play a crucial role in protecting the photosynthetic apparatus by limiting the deposition of toxic photo‐inhibitory metabolites (Hossain et al, 2017). Lactic acid accumulation may be involved in the regulation of cytoplasmic pH, and production of pyruvate to maintain glycolysis under salt stress condition (Felle et al, 2005; Hossain et al, 2017; Ye et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Evaluation of high salinity tolerance in Pongamia pinnata (L.) Pierre by a systematic analysis of hormone‐metabolic network

Marriboina

Sharma

Sengupta

et al. 2021

Physiologia Plantarum

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Salinity stress results in significant losses in plant productivity and loss of cultivable lands. Although Pongamia pinnata is reported to be a salt-tolerant semiarid biofuel tree, the adaptive mechanisms to saline environments are elusive. Despite a reduction in carbon exchange rate (CER), the unchanged relative water content provides no visible salinity induced symptoms in leaves of hydroponic cultivated Pongamia seedlings for 8 days. Our Na + -specific fluorescence results demonstrated that there was an effective apoplastic sodium sequestration in the roots. Salinity stress significantly increased zeatin ($5.5-fold), and jasmonic acid ($3.8-fold) levels in leaves while zeatin ($2.5-fold) content increased in leaves as well as in roots of salt-treated plants. Metabolite analysis suggested that osmolytes such as myo-inositol and mannitol were enhanced by $12-fold in leaves and roots of salt-treated plants. Additionally, leaves of Pongamia showed a significant enhancement in carbohydrate content, while fatty acids were accumulated in roots under salt stress condition. At the molecular level, salt stress enhanced the expression of genes related to transporters, including the Salt Overly Sensitive 2 gene (SOS2), SOS3, vacuolar-cation/proton exchanger, and vacuolar-proton/ATPase exclusively in leaves, whereas the Sodium Proton Exchanger1 (NHX1), Cation Calcium Exchanger (CCX), and Cyclic Nucleotide Gated Channel 5 (CNGC5) were up-regulated in roots. Antioxidant gene expression analysis clearly demonstrated that peroxidase levels were significantly enhanced by $10-fold in leaves, while Catalase and Fe-superoxide Dismutase (Fe-SOD) genes were increased in roots under salt stress. The correlation interaction studies between phytohormones and metabolites revealed new insights into the molecular and metabolic adaptations that confer salinity tolerance to Pongamia.

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Physiological and metabolomic responses of bermudagrass (Cynodon dactylon) to alkali stress

Cited by 35 publications

References 39 publications

Integrating transcriptome and metabolome analyses of the response to cold stress in pumpkin (Cucurbita maxima)

Integrating transcriptome and metabolome analyses of the response to cold stress in pumpkin (Cucurbita maxima)

Response Mechanisms of Plants Under Saline-Alkali Stress

Evaluation of high salinity tolerance in Pongamia pinnata (L.) Pierre by a systematic analysis of hormone‐metabolic network

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