Abscisic Acid Mediates Drought and Salt Stress Responses in Vitis vinifera—A Review

Marusig, Daniel; Tombesi, Sergio

doi:10.3390/ijms21228648

Cited by 48 publications

(22 citation statements)

References 111 publications

(138 reference statements)

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“…These osmolytes participate in the regulation of osmotic pressure by lowering the osmotic potential in the cytosolic compartment. They also act as signaling molecules to induce ABA accumulation, affect related gene expression, and regulate plant growth under salt stress [ 48 ]. Protein kinases act as a convergence point of rapid osmoregulation and salt stress signaling [ 49 ].…”

Section: Regulation Of Plant Response To Salt Stressmentioning

confidence: 99%

Regulation of Plant Responses to Salt Stress

Zhao

Zhang

Liu

et al. 2021

IJMS

396

189

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Salt stress is a major environmental stress that affects plant growth and development. Plants are sessile and thus have to develop suitable mechanisms to adapt to high-salt environments. Salt stress increases the intracellular osmotic pressure and can cause the accumulation of sodium to toxic levels. Thus, in response to salt stress signals, plants adapt via various mechanisms, including regulating ion homeostasis, activating the osmotic stress pathway, mediating plant hormone signaling, and regulating cytoskeleton dynamics and the cell wall composition. Unraveling the mechanisms underlying these physiological and biochemical responses to salt stress could provide valuable strategies to improve agricultural crop yields. In this review, we summarize recent developments in our understanding of the regulation of plant salt stress.

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Section: Regulation Of Plant Response To Salt Stressmentioning

confidence: 99%

Regulation of Plant Responses to Salt Stress

Zhao

Zhang

Liu

et al. 2021

IJMS

396

189

View full text Add to dashboard Cite

show abstract

“…In passive closure, closure is adjusted by tissue water potential. In active closure, increasing ABA levels in leaves activate stomatal closure via ion exchange, concurrently increasing hydraulic conductivity simplifying ABA transport and water uptake in the roots [8].…”

Section: Introductionmentioning

confidence: 99%

Biochemical Responses and Leaf Gas Exchange of Fig (Ficus carica L.) to Water Stress, Short-Term Elevated CO2 Levels and Brassinolide Application

2021

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The identification of the key components in the response to drought stress is fundamental to upgrading drought tolerance of plants. In this study, biochemical responses and leaf gas exchange characteristics of fig (Ficus carica L.) to water stress, short-term elevated CO2 levels and brassinolide application were evaluated. The ‘Improved Brown Turkey’ cultivar of fig was propagated from mature two- to three-year-old plants using cuttings, and transferred into a substrate containing 3:2:1 mixed soil (top soil: organic matters: sand). The experiment was arranged as a nested design with eight replications. To assess changes in leaf gas exchange and biochemical responses, these plants were subjected to two levels of water stress (well-watered and drought-stressed) and grown under ambient CO2 and 800 ppm CO2. Water deficits led to effects on photosynthetic rate, stomatal conductance, transpiration rate, vapour pressure deficit, water use efficiency (WUE), intercellular CO2, and intrinsic WUE, though often with effects only at ambient or elevated CO2. Some changes in content of chlorophyll, proline, starch, protein, malondialdehyde, soluble sugars, and activities of peroxidase and catalase were also noted but were dependent on CO2 level. Overall, fewer differences between well-watered and drought-stressed plants were evident at elevated CO2 than at ambient CO2. Under drought stress, elevated CO2 may have boosted physiological and metabolic activities through improved protein synthesis enabling maintenance of tissue water potential and activities of antioxidant enzymes, which reduced lipid peroxidation.

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“…These articles will also shed light on the molecular mechanisms of ABA and GAs action in plants. The reviews published in this issue focus on the interaction between ABA and GAs in regulating non climacteric fruit development and maturation [ 7 ], current knowledge on the role of ABA in mediating mechanisms whereby grapevine deals with abiotic stresses [ 8 ], the analysis of the role of ABA in flowering transition [ 9 ], the mechanism by which the type 2C Protein Phosphatases (PP2C) gene transcription modulates ABA signaling [ 10 ], and the role of the Mediator complex on the ABA signaling pathway and abiotic stress response [ 11 ]. The original research articles investigate the causes and consequences of the kaolin-induced modulation of ABA biosynthesis in grapevines when faced with a water deficit [ 12 ], the involvement of ABA in plant immune responses [ 13 ], and the relation between GAs and Arabidopsis receptor-like cytoplasmic kinase (RLCK) VI_A2 [ 14 ].…”

mentioning

confidence: 99%

“…Besides its socio-economic importance, Vitis vinifera is also a model species in drought-response research. Marusig and Tombesi [ 8 ] provide an exhaustive overview of current knowledge on the role of ABA in mediating mechanisms whereby grapevines cope with abiotic stresses. In line with this, these authors especially focus on the mechanisms of ABA biosynthesis and translocation, the role of this phytohormone in regulating stomata closure and carbohydrates mobilization in response to drought stress, as well as ABA involvement in salt stress.…”

mentioning

confidence: 99%

“…The results of all these works clearly demonstrate that in Vitis vinifera , ABA is a key hormone involved in regulating the mechanisms for coping with major threats caused by climate change. Marusig and Tombesi [ 8 ] also highlight some main issues that deserve further research in this field, which are fundamentally the understanding of the role that ABA plays in drought stress in relation to water stress severity, duration and frequency, the interaction of ABA regulation and carbohydrates under water stress, and a profounder knowledge of the ABA function in the salt stress response.…”

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confidence: 99%

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