cucumis zeyheri/hypoxia

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Polyamine biosynthesis and degradation are modulated by exogenous gamma-aminobutyric acid in root-zone hypoxia-stressed melon roots.

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We detected physiological change and gene expression related to PA metabolism in melon roots under controlled and hypoxic conditions with or without 5 mM GABA. Roots with hypoxia treatment showed a significant increase in glutamate decarboxylase (GAD) activity and endogenous GABA concentration.

[Impacts of root-zone hypoxia stress on muskmelon growth, its root respiratory metabolism, and antioxidative enzyme activities].

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By using aeroponics culture system, this paper studied the impacts of root-zone hypoxia (10% O2 and 5% O2) stress on the plant growth, root respiratory metabolism, and antioxidative enzyme activities of muskmelon at its fruit development stage. Root-zone hypoxia stress inhibited the plant growth of

[Effects of exogenous gamma-aminobutyric acid on antioxidant enzyme activity and reactive oxygen content in muskmelon seedlings under nutrient solution hypoxia stress].

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The effects of exogenous gamma-aminobutyric acid (GABA) on antioxidant defense system and reactive oxygen species (ROS) in seedlings of two varieties with different resistance to hypoxia stress were studied under hypoxia stress in a nutrient solution culture system. The results showed that GABA

Exogenous calcium affects nitrogen metabolism in root-zone hypoxia-stressed muskmelon roots and enhances short-term hypoxia tolerance.

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We investigated the effects of short-term root-zone hypoxic stress and exogenous calcium application or deficiency in an anoxic nutrient solution on nitrogen metabolism in the roots of the muskmelon cultivar Xiyu No. 1. Seedlings grown in the nutrient solution under hypoxic stress for 6d displayed

[Effects of gamma-aminobutyric acid on the photosynthesis and chlorophyll fluorescence parameters of muskmelon seedlings under hypoxia stress].

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By the method of hydroponic culture, this paper studied the effects of exogenous gamma-aminobutyric acid (GABA) on the photosynthetic pigment contents, photosynthesis, and chlorophyll fluorescence parameters of muskmelon seedlings under hypoxia stress. Hypoxia stress induced a significant decrease

Comparative proteomic analysis of gamma-aminobutyric acid responses in hypoxia-treated and untreated melon roots.

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Hypoxia is one of the main environmental stresses that accounts for decreasing crop yield. To further investigate the mechanisms whereby exogenous GABA alleviates hypoxia injury to melon seedlings, a comparative proteomic analysis was performed using roots subjected to normal aeration and hypoxia

Putrescine enhancement of tolerance to root-zone hypoxia in Cucumis sativus: a role for increased nitrate reduction

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Cucumber (Cucumis sativus L.) plants were subjected to hypoxic stress with or without a pretreatment of putrescine (Put) to investigate whether nitrate reduction is involved in the enhancement effects of Put on tolerance to root-zone hypoxia. Both hypoxic stress and exogenous Put application

[Effects of exogenous spermidine on Cucumis sativus L. seedlings photosynthesis under root zone hypoxia stress].

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With water culture, this paper studied the effects of exogenous spermidine (Spd) on the net photosynthetic rate (Pn), intercellular CO2 concentrations (Ci), stomatal conductance (Gs), transpiration rate (Tr), apparent quantum yield (phi c), and carboxylation efficiency (CE) of cucumber seedlings

Growth response of greenhouse-produced muskmelon and tomato to sub-surface drip irrigation and soil aeration management factors.

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Hypoxia causes injury and yield loss. Soil aeration has been reported to accelerate the growth of plants and increase crop yield. The aim of this study was to examine growth response of greenhouse-produced muskmelon to 3 levels of sub-surface drip irrigation (I), 3 different

Modulation of nitrate reductase activity in cucumber (Cucumis sativus) roots.

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Nitrate reductase (NR) (EC 1.6.6.1) activity and NR activation state, i.e. activity in the presence of Mg(2+) relative to activity in the absence of Mg(2+), in cucumber (Cucumis sativus) leaves increased in the light and decreased in the dark. In contrast to leaves, NR activation state in the roots

Antisense suppression of cucumber (Cucumis sativus L.) sucrose synthase 3 (CsSUS3) reduces hypoxic stress tolerance.

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Sucrose synthase (SUS; EC 2.4.1.13) plays important roles in sugar metabolism and abiotic stress response. But the genes encoding SUS in cucumber (Cucumis sativus L.) have not been well studied. Here, we isolated four cucumber sucrose synthase genes (CsSUS). Among them, CsSUS3, which highly

Central Metabolism Is Tuned to the Availability of Oxygen in Developing Melon Fruit.

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Respiration of bulky plant organs such as fleshy fruits depends on oxygen (O₂) availability and often decreases with O₂ concentration to avoid anoxia, but the relationship between O₂ diffusional resistance and metabolic adjustments remains unclear. Melon fruit

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