Effect of drought stress on the osmotic adjustment, cell wall elasticity and cell volume of six cultivars of common beans (Phaseolus vulgaris L.)

Martínez, Juan-Pablo; Silva, H.; Ledent, Jean‐François; Pinto, Manuel

doi:10.1016/j.eja.2006.08.003

Cited by 253 publications

(141 citation statements)

References 30 publications

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“…Our results show that the RWC decreased significantly as water stress intensified. A similar behaviour was observed in Phaseolus vulgaris (Martínez et al, 2007) and M. truncatula (Nunes et al, 2008).…”

Section: Discussionsupporting

confidence: 56%

Differential responses in growth and water relationship of<br>Medicago sativa (L.) cv. Gabès and Astragalus gombiformis (Pom.)<br>under water-limited conditions

Goraibr

Neffati

2010

Emir. J. Food Agric

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Abstract:This study aims to compare the growth attributes and water relationship of two-forage legume plants: a crop plant, Medicago sativa (L.) cv. Gabès, and a wild plant, Astragalus gombiformis (Pom.), under drought-stress conditions. Water deficit stress was imposed at 40% and 70% of field capacity (FC) from 60 to 90 days after sowing, while the control pots were maintained at 100% FC throughout the period of entire growth. The results showed that the high potentialities of growth in both species were recorded for control plants. Water deficit reduced growth (whole plant biomass, leaf number, stem elongation rate and shoot relative growth rate) and decreased shoot/root ratio. After 30 days of water deficit stress, the leaf relative water content (RWC) and the water potential (Ψ w ) evolved in such a way and decreased significantly as water stress was intensified. The lowest level of transpiration rate of the most stressed plants may be explained by the lowering of leaf RWC. Under such conditions, the water use efficiency of wild plants was more pronounced than alfalfa plants. It can be concluded that A. gombiformis manifested the best morpho-physiological traits of adaptation to moisture stress when compared to M. sativa. This wild plant appears to be more tolerance to water stress than that cultivated, therefore a possibility of exploitation of this species.

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Section: Discussionsupporting

confidence: 56%

Differential responses in growth and water relationship of<br>Medicago sativa (L.) cv. Gabès and Astragalus gombiformis (Pom.)<br>under water-limited conditions

Goraibr

Neffati

2010

Emir. J. Food Agric

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“…Using the insects' feeding particularity, Nardini et al [22] demonstrated that the two main parenchyma of the leaf (palisade and spongy) played different roles in leaf hydraulic resistance. Changes in cell size in response to drought have already been reported in various species [23][24][25]. These effects of drought stress can be effectively monitored using NMR (nuclear magnetic resonance) relaxometry.…”

Section: Introductionmentioning

confidence: 99%

Leaf Development Monitoring and Early Detection of Water Deficiency by Low Field Nuclear Magnetic Resonance Relaxation in Nicotiana tabacum Plants

et al. 2018

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Drought is the main abiotic stress worldwide affecting harvest quality and quantity of numerous crops. To enable better water management, low field NMR (nuclear magnetic resonance) relaxometry was assessed as a developmental marker and a new method for early detection of water deficiency. The effect of a foliar biostimulant against water stress was also investigated. Two leaves of different ranks (four and eight) were studied. The leaves of different ranks were characterized by different NMR T 2 spectra which validated the ability of NMR to describe the developmental stage of tobacco. Results also showed that T 2 NMR relaxation spectra allow the detection of mild water stress (80% of the field capacity) through the precise characterization of the leaf water status while other water stress markers (relative water content, photosynthetic related parameters . . . )were not yet impacted. The agricultural impact of the mild water stress was determined through the nitrogen rate in shoots and amino acids assay six weeks after the beginning of the stress and results shows that foliar application of biostimulant limits the negative consequences of drought. Our results demonstrate the sensitivity of NMR to detect slight changes triggered in the leaf by water stress at the tissue level.

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“…Many reports showed an increase in stomatal density and a decrease in cell size under water deficit, indicating that an adaptation to drought could occur (Martinez et al, 2007). The compromise between stomatal size and density is related to the limitation of the leaf area allocated to stomata.…”

Section: Resultsmentioning

confidence: 99%

Determination of Correlation between Stomatal Density and Gas Exchange Traits in Guava

Nagaraja¹,

Goswami²

2017

Int.J.Curr.Microbiol.App.Sci

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Effect of drought stress on the osmotic adjustment, cell wall elasticity and cell volume of six cultivars of common beans (Phaseolus vulgaris L.)

Cited by 253 publications

References 30 publications

Differential responses in growth and water relationship of<br>Medicago sativa (L.) cv. Gabès and Astragalus gombiformis (Pom.)<br>under water-limited conditions

Differential responses in growth and water relationship of<br>Medicago sativa (L.) cv. Gabès and Astragalus gombiformis (Pom.)<br>under water-limited conditions

Leaf Development Monitoring and Early Detection of Water Deficiency by Low Field Nuclear Magnetic Resonance Relaxation in Nicotiana tabacum Plants

Determination of Correlation between Stomatal Density and Gas Exchange Traits in Guava

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