Physiological, biochemical and molecular responses associated with drought tolerance in grafted grapevine

Jiao, Shungang; Zeng, Fanwei; Huang, Yaping; Zhang, Libing; Mao, Juan; Chen, Baihong

doi:10.1186/s12870-023-04109-x

Cited by 21 publications

(10 citation statements)

References 77 publications

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“…As the ratio of free water to bound water increases, gas exchange rates improve in non-water-stressed plants [63][64][65]. However, as intracellular, bound water contents increase in water-stressed plants, the plants become more adaptive and express more drought-tolerant attributes [66][67][68]. Drought-tolerant plants develop modulated responses to swings in soil moisture levels and show less variation in plant tissue water content [66][67][68].…”

Section: Foliage and Plant Water Content Resultsmentioning

confidence: 99%

Priming Bean Seedlings to Boost Natural Plant Defenses Against Common Bacterial Wilt: Leaf Architecture, Leaf area, Foliage Water Content, and Plant Biomass Results (Part 3)

Ramsey,

Sandoval,

Freebury

et al. 2023

Glob. J. Agric. Innov. Res. Dev

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This greenhouse study evaluated the effects of two chemicals for priming kidney bean seedlings against bacterial wilt disease (Curtobacterium flaccumfaciens pv. Flaccumfaciens) (CFF). The premise of this study was that the oxidant properties of chlorine dioxide would mimic the signaling properties of radical oxygen species thereby initiating a cascade of molecular plant defenses. The factorial study included two levels for the foliar chlorine dioxide treatment, two levels for the bacterial wilt inoculation treatment, and two optional treatments. The biomass variables included oven dry total plant biomass, oven dry fruit biomass, and oven dry leaf biomass. Also, foliage and total plant water content data was collected, as well as total leaf area. Specific leaf area (SLA) was estimated from the leaf area and biomass data. The primers had equivalent leaf area, plant and fruit biomass as the water control for the CFF wilt inoculated plants. The EB 400 mg/l primer reduced SLA for the CFF inoculated plants. Both EB formulations increased aboveground water content in the CFF wilt inoculated plants. Multivariate tables revealed several significant correlations among leaf architecture, plant tissue water content, and biomass growth parameters for the EB primers and the water control treatment for the two CFF wilt treatments. Re-allocation of plant resources from plant growth to plant defenses due to chemical primers were estimated and discussed to determine the tradeoffs between plant yield and enhanced plant defenses. The three articles in this study show that chlorine dioxide primers can initiate a series of ROS and salicylic acid signals. This interplay of ROS signals and salicylic acid signals generated by the chlorine dioxide primers activates a long-term SAR response that protects plants against future pathogen attacks. In addition, interaction of the ROS and salicylic acid signals activates a suite of defense mechanisms that provide universal, multifaceted plant immunity that can be sustained across a crop season.

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Section: Foliage and Plant Water Content Resultsmentioning

confidence: 99%

Priming Bean Seedlings to Boost Natural Plant Defenses Against Common Bacterial Wilt: Leaf Architecture, Leaf area, Foliage Water Content, and Plant Biomass Results (Part 3)

Ramsey,

Sandoval,

Freebury

et al. 2023

Glob. J. Agric. Innov. Res. Dev

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“…Drought stress can reduce the conversion and utilization efficiency of light energy in plant photosynthetic organs, leading to a decrease in their assimilation ability and the production of large amounts of ROS. Excessive ROS accumulation in cells leads to membrane lipid peroxidation, which destroys the structure and function of biological macromolecules [19]. This destruction, in turn, leads to disturbances in photosynthetic metabolism, further reducing the photosynthetic rate [75] and forming a vicious cycle.…”

Section: Discussionmentioning

confidence: 99%

“…Drought affects plants' growth, development, and physiological and biochemical metabolic processes at various stages and is an important limiting factor for plant survival and growth [16]. Drought stress can disrupt plants' physiological and biochemical processes, including their cell membrane structure, key enzyme activities, the accumulation and synthesis of reactive oxygen species (ROS), stomatal regulation, and other gas exchange characteristics [17][18][19]. Southwestern China is the primary tobacco-producing region in China.…”

Section: Introductionmentioning

confidence: 99%

Transgenic Tobacco with the BADH Gene Shows Enhanced Photosynthesis Resistance to Drought Stress Induced by PEG-6000

Wang,

Yang,

Xue

2024

Agronomy

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Extreme weather events, including drought, have occurred worldwide with increasing frequency and severity in recent years. Drought stress is the main limiting factor for agricultural development in many regions, including tobacco—an important economic crop and a model plant for scientific research. As it is adapted to the tropics, tobacco is highly susceptible to drought stress, with resultant decreases in yield and quality. Glycine betaine (GB) is an osmoregulatory substance that can enhance plant resistance to various abiotic stresses. Here, we investigate the protective mechanism of genetically engineered glycine betaine (GB) on tobacco photosynthesis under drought stress induced by 30% PEG-6000. This study used transgenic tobacco (T) accumulating GB and wild-type tobacco (WT) to investigate the protective effects conferred by the genetic engineering of GB synthesis on tobacco photosynthesis under drought stress (induced by 30% PEG-6000). The results showed that the net photosynthetic rate of the tobacco plants significantly decreased under drought stress, and the degree of decrease was significantly lower in the T line than in the WT line. GB accumulation improved the resistance of photosynthesis to drought stress. Furthermore, under drought stress, the photosynthesis improvement in the T line was related to the accumulation of GB, leading to maintenance of the water status, the promotion of osmotic regulation, and an enhancement in antioxidant enzyme activities, which reduced membrane peroxidation and thereby increased the thylakoid membrane’s protein content and function, especially the photosystem II (PSII) function. The results provide a theoretical basis for further research on genetic engineering related to GB synthesis and the field application of exogenous GB.

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“…The most serious problems faced in the cultivation of grapes are abiotic and biotic stresses, which lead to a decrease in grape yield and fruit quality [5][6][7]. Biocontrol is gaining popularity in viticulture as a means to reduce the use of chemical pesticides, which have negative effects on the environment and human safety [8,9].…”

Section: Introductionmentioning

confidence: 99%

Bacterial and Fungal Endophytes of Grapevine Cultivars Growing in Primorsky Krai of Russia

Aleynova,

Nityagovsky,

Ananev

et al. 2023

Horticulturae

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In this study, the biodiversity of endophytic bacteria of cultivated grape varieties from the vineyards of Primorsky Krai, Russia, was analyzed for the first time. Far Eastern grape varieties with a high level of stress resistance are a unique object of research as they are cultivated in cold and humid climates with a short summer season. Grapevine endophytic microorganisms are known as promising agents for the biological control of grapevine diseases and agricultural pests. Using genomic approaches, we analyzed the biodiversity of the endophytic bacteria and fungi in the most common grape varieties of Primorsky Krai, Russia: Vitis vinifera × Vitis amurensis cv. Adele (hybrid No. 82-41 F3), Vitis riparia × V. vinifera cv. Mukuzani (pedigree unknown), two cultivars Vitis labrusca × V. riparia cv. Alfa, and Vitis Elmer Swenson 2-7-13 cv. Prairie Star for the first time. The main representatives of the endophytic microorganisms included 16 classes of bacteria and 21 classes of fungi. The endophytic bacterial community was dominated by Gammaproteobacteria (31–59%), followed by Alphaproteobacteria (9–34%) and, to a lesser extent, by the classes Bacteroidia (9–22%) and Actinobacteria (6–19%). The dominant fungal class was Dothideomycetes (43–77%) in all samples analyzed, with the exception of the grapevine cv. Mukuzani from Makarevich, where Malasseziomycetes was the dominant fungal class. In the samples cv. Alfa and cv. Praire Star, the dominant classes were Tremellomycetes and Microbotriomycetes. A comparative analysis of the endophytic communities of the cultivated grape varieties and the wild grape V. amurensis Rupr. was also carried out. We found that 18–20% of the variance between the endophytic communities accounted for the differences between the cultivated and wild grapevines, while the factors “plant location” and “individual plants” accounted for 50–56% and 3–10% of the variance, respectively. The results of this study can be used to develop new means of biocontrol in vineyards to protect plants from abiotic stresses and pathogens.

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Physiological, biochemical and molecular responses associated with drought tolerance in grafted grapevine

Cited by 21 publications

References 77 publications

Priming Bean Seedlings to Boost Natural Plant Defenses Against Common Bacterial Wilt: Leaf Architecture, Leaf area, Foliage Water Content, and Plant Biomass Results (Part 3)

Priming Bean Seedlings to Boost Natural Plant Defenses Against Common Bacterial Wilt: Leaf Architecture, Leaf area, Foliage Water Content, and Plant Biomass Results (Part 3)

Transgenic Tobacco with the BADH Gene Shows Enhanced Photosynthesis Resistance to Drought Stress Induced by PEG-6000

Bacterial and Fungal Endophytes of Grapevine Cultivars Growing in Primorsky Krai of Russia

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