Water deficit effects on osmotic adjustment and solute accumulation in leaves of annual clovers

Iannucci, Anna; Russo, Mario; Arena, Lucia; Fonzo, N. di; Martiniello, P.

doi:10.1016/s1161-0301(01)00121-6

Cited by 70 publications

(44 citation statements)

References 23 publications

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“…Water stress reduced seed yield and yield components in all stressed treatments as compared to control. These reductions confirm previous findings on annual clovers (Iannucci et al, 2002) and faba bean (Ghassemi-Golezani et al, 2009). According to Gorai et al (2010), lowering production constitutes an adaptive mechanism which reduces plant's water needs in Medicago sativa L. and Astragalus gombiformis (Pom.…”

Section: Discussionsupporting

confidence: 92%

“…Martinez et al (2007) reported that this mechanism could be one of the most important features to minimize the impact of drought stress on crop production in common beans (Phaseolus vulgaris L.) Avoidance strategies are mechanisms that reduce water loss while maintaining water uptake, it includes stomatal closure, hydraulic conductance, changes in leaf area, leaf orientation, and anatomy and root growth patterns. Osmotic adjustment and changes in tissue elasticity are classified as stress tolerance strategies (Iannucci et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

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Agronomic performances of three vetch species growing under different drought levels

Mezni

Chaïbi

2014

Chilean J. Agric. Res.

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The current challenge of agriculture is to get the best yields while overcoming frequent water deficit conditions. The objective of this study was to compare performances of three vetch species (Vicia narbonensis L., V. sativa L., and V. villosa Roth) subjected to water stress. Plants were sown in pots under rainout shelter and submitted to four water regimes: control (100% field capacity [FC]), 80%, 60%, and 40% FC through 3 yr experiment. Results showed that V. narbonensis had the smallest declines in all the studied variables in response to water restriction but the highest water use efficiency (WUE) and stress tolerance index (STI) in both control and water-treated plants. This indicates the greater tolerance of this species to water constraint and its better water use. Vicia villosa was characterized by drastic declines in leaf area and DM yield (75% and 64%, respectively). It had also the smallest WUE and STI suggesting its low adaptation to water stress. Vicia sativa showed severe reductions in seed yield and yield components; accordingly, it was the most sensitive species in terms of seed yield. The three species implied avoidance strategies to cope with water stress. The different levels of drought tolerance explain the species ecological distribution in Tunisia.

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Agronomic performances of three vetch species growing under different drought levels

Mezni

Chaïbi

2014

Chilean J. Agric. Res.

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“…Salt-tolerant cultivars have a mechanism to select high K contents under salt stress, since maintenance of adequate levels of K is essential for plant survival in saline habitats (Grattan and Grieve, 1999). In this sense, K is related to osmotic adjustment in many species because it is one of the primary osmotic solutes (Iannucci et al, 2002). Furthermore, K is also associated with stomatal regulation, which is a principal mechanism that controls water balance in plants (Tuna et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

Spectral indices for the detection of salinity effects in melon plants

Hernández

Melendez-Pastor

Pedreño

et al. 2014

Sci. agric. (Piracicaba, Braz.)

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). Spectral data of leaves were transformed into vegetation indices indicative of the physiological status of the plants. The results showed differences for N (p < 0.05), K and Na content (p < 0.01) due to salinity suggesting different degrees of salt stress on the plants. Specific leaf area increased with salinity levels (p < 0.001). The capabilities of VNIR radiometry to assess the influence of soil salinity on melon physiology using a non-destructive method were demonstrated. A normalized difference vegetation index , and the ratio between water index (WI) and normalized difference vegetation index (WI/NDVI 750-705 ) showed significant relationships (p < 0.01) with the salinity. Therefore, this method could be used for in-situ early detection of salinity stress effects.

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“…Statistical differences (P < 0.01) were found between the three water levels (Table 1, Figure 1), as seen in P. vulgaris (Martínez et al 2007) and Trifolium sp. (Iannucci et al 2002). In general, Ψ w lowered significantly from -0.68 MPa in R1, to -0.74 MPa in R2, and -0.97 MPa in R3, while RWC decreased only by 10%.…”

Section: Resultsmentioning

confidence: 79%

Biological nitrogen fixation of Biserrula pelecinus L. under water deficit

Vicente¹,

Pérez‐Fernández²,

Pereira³

et al. 2012

PLANT SOIL ENVIRON

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The present work studied the effects of water deficiency conditions on the biological nitrogen fixation of three native rhizobia (SafPt12, SafPt6, and AjuPt16) isolated from Biserrula pelecinus L., and a reference strain Mesorhizobium ciceri biovar biserrulae. In terms of plant-water status, B. pelecinus showed typical signs of drought avoidance strategies such as reducing the aboveground development (i.e. reduction in leaf surface area and increase in root/ shoot ratio) in detriment of a better developed root system. Dry-matter production and nitrogen content of the aboveground biomass decreased with the increasing levels of drought stress, as well as nodulation and symbiotic nitrogen fixation, for all the tested isolates. The parameters investigated suggested that SafPt12 was the most successful native rhizobia to withstand severe water conditions without compromising nitrogen fixation demands.

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Water deficit effects on osmotic adjustment and solute accumulation in leaves of annual clovers

Cited by 70 publications

References 23 publications

Agronomic performances of three vetch species growing under different drought levels

Agronomic performances of three vetch species growing under different drought levels

Spectral indices for the detection of salinity effects in melon plants

Biological nitrogen fixation of Biserrula pelecinus L. under water deficit

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