Changes in the Levels of IAA and ABA in Cucumber Leaves under Progressive Soil Drought

Pustovoitova, T. N.; Zhdanova, N. E.; Zholkevich, V. N.

doi:10.1023/b:rupp.0000035745.82509.bc

Cited by 49 publications

(37 citation statements)

References 7 publications

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“…In addition, plant hormones play critical roles in regulating plant responses to stressful environments . Both ABA and IAA are involved in the development of defensive responses during the adaptation to drought (Pustovoitova et al, 2004). We found that endogenous ABA significantly accumulated under drought, ABA application and D + ABA under FL.…”

Section: Discussionmentioning

confidence: 77%

Effect of drought and ABA on growth, photosynthesis and antioxidant system of Cotinus coggygria seedlings under two different light conditions

Zhao

Duan

et al. 2011

Environmental and Experimental Botany

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Section: Discussionmentioning

confidence: 77%

Effect of drought and ABA on growth, photosynthesis and antioxidant system of Cotinus coggygria seedlings under two different light conditions

Zhao

Duan

et al. 2011

Environmental and Experimental Botany

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“…Expression of the majority of auxin and ethylene related transcripts contrasted with expression of CK related transcripts; however specific roles in dehydration responses were not clear. Auxin levels were increased in cucumber (Cucumis sativus L.) leaves in response to dehydration stress (Pustovoitova et al, 2004), while there was an ambiguous relationship in wheat at the grain filling stage (Xie et al, 2003). Ethylene has also been associated with dehydration stress responses, though independently or in a complex relationship with ABA (Tanaka et al, 2005;Wilkinson and Davies, 2009).…”

Section: Global Transcriptomic Responsesmentioning

confidence: 99%

Physiology and transcriptomics of water-deficit stress responses in wheat cultivars TAM 111 and TAM 112

Reddy

Liu

Rudd

et al. 2014

Journal of Plant Physiology

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Hard red winter wheat crops on the U.S. Southern Great Plains often experience moderate to severe drought stress, especially during the grain filling stage, resulting in significant yield losses. Cultivars TAM 111 and TAM 112 are widely cultivated in the region, share parentage and showed superior but distinct adaption mechanisms under water-deficit (WD) conditions. Nevertheless, the physiological and molecular basis of their adaptation remains unknown. A greenhouse study was conducted to understand

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“…Exogenous proline and betaine can speed up the rate at which dehydrated cucumber seedlings rehydrate (Itai & Paleg 1982). Abscisic acid (ABA) and indole-3-acetic acid (IAA) are involved in the development of defence responses during adaptation to drought (Pustovoitova et al 2004). In our laboratory, we found that exogenous ABA could improve tolerance to low temperature (Meng et al 2008); pre-treatment of seeds with ABA is much easier than spraying ABA on seedlings.…”

Section: Introductionmentioning

confidence: 99%

Effects of exogenous abscisic acid pre-treatment of cucumber (Cucumis sativus) seeds on seedling growth and water-stress tolerance

Wang

Sui

et al. 2010

New Zealand Journal of Crop and Horticultural Science

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The effect of treating cucumber seeds (Cucumis sativus 'Zhongnong 12') with exogenous abscisic acid (ABA) on seedling growth and various plant characteristics, including chlorophyll a fluorescence, net photosynthesis, antioxidant enzyme activity and water-stress tolerance under dehydration was investigated. The results showed that the photosynthesis rate (Pn), stomatal conductance (Gs), transpiration rate (Tr) and the apparent quantum yield of photosynthesis (AQY) all declined gradually, but the decline in ABA seed pre-treated seedlings (ASPS) was less than in non-ABA seed pre-treated seedlings (NASPS), especially for Pn during dehydration. Water use efficiency (WUE) was observed in ASPS, which was three times greater than that in NASPS, implying that the corresponding increase in WUE, calculated on the basis of water uptake, was the result of increased Pn and a reduction in transpiration in ASPS. During dehydration, the levels of electron transport rate (ETR), photochemical efficiency of PSII (F v /F m ), photochemical quenching (qP), quantum efficiency of PSII photochemistry (F PSII ) and the ratio of photochemicals (Pc) all decreased; in particular, the decline in NASPS was more than that in ASPS. The levels of non-photochemical quench (NPQ), ratio of antenna heat dissipation (Hd) and ratio of heat dissipation in PSII (Ex) all increased more in NASPS than in ASPS, suggesting that ABA could protect cucumber seedlings from the damage of photoinhibition by improved heat dissipation. Dehydration caused an increase in antioxidant enzyme activities in the first two days, especially in ASPS, and then declined slightly. In comparison with NASPS, ASPS showed a marked decrease in malondialdehyde (MDA) content during dehydration. On the other hand, rehydration resulted in nearly 100% recovery of Pn, Gs and Tr in ASPS, as well as chlorophyll fluorescence parameters, but only a small recovery in NASPS. These results suggest that imbibition of cucumber seeds with ABA protected cucumber seedlings from water-loss damage and increased their resistance or tolerance of dehydration, especially improving their WUE by improved Pn rather than by reduced water uptake under dehydration. The beneficial effect of exogenous ABA applications on reducing susceptibility to gradual dehydration of cucumber seedlings was confirmed in our study by applying ABA to imbibition cucumber seeds.

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Changes in the Levels of IAA and ABA in Cucumber Leaves under Progressive Soil Drought

Cited by 49 publications

References 7 publications

Effect of drought and ABA on growth, photosynthesis and antioxidant system of Cotinus coggygria seedlings under two different light conditions

Effect of drought and ABA on growth, photosynthesis and antioxidant system of Cotinus coggygria seedlings under two different light conditions

Physiology and transcriptomics of water-deficit stress responses in wheat cultivars TAM 111 and TAM 112

Effects of exogenous abscisic acid pre-treatment of cucumber (Cucumis sativus) seeds on seedling growth and water-stress tolerance

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