Defence Strategies of Annual Plants Against Drought

Nemeskéri, Eszter; Molnár, Krisztina; Víg, Róbert; Dobos, Attila; Nagy, János

doi:10.5772/34814

Cited by 3 publications

(4 citation statements)

References 120 publications

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“…; Nemeskéri et al . ). Population and species differences along environmental gradients reflect the filtering aspect of community construction (Saldana et al .…”

Section: Introductionmentioning

confidence: 97%

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Functional trait trade‐off and species abundance: insights from a multi‐decadal study

Scholl

Basinger

et al. 2019

Ecology Letters

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Phylogenetically informed trait comparisons across entire communities show promise in advancing community ecology. We use this approach to better understand the composition of a community of winter annual plants with multiple decades of monitoring and detailed morphological, phenological and physiological measurements. Previous research on this system revealed a physiological trade‐off among dominant species that accurately predicts population and community dynamics. Here we expanded our investigation to 51 species, representing 96% of individual plants recorded over 30 years, and analysed trait relationships in the context of species abundance and phylogenetic relationships. We found that the functional‐trait trade‐off scales to the entire community, albeit with diminished strength. It is strongest for dominant species and weakens as progressively rarer species are included. The trade‐off has been consistently expressed over three decades of environmental change despite some turnover in the identity of dominant species.

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“…; Nemeskéri et al . ). Population and species differences along environmental gradients reflect the filtering aspect of community construction (Saldana et al .…”

Section: Introductionmentioning

confidence: 97%

“…; Nemeskéri et al . ), population or cultivar differences along environmental gradients (Lizana et al . ; Munoz‐Perea et al .…”

Section: Introductionmentioning

confidence: 99%

Functional trait trade‐off and species abundance: insights from a multi‐decadal study

Scholl

Basinger

et al. 2019

Ecology Letters

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“…One of the essential defense adaptation mechanisms in plants to avoid drought damage is the maintenance of osmotic adjustment in the cells. This can be achieved by acting on some plant attributes such as the reduction of leaf size, or leaf rolling under a short-term water deficiency (Nemeskéri et al, 2012). In our experiment, the eleven wheat cultivars were visually assessed for leaf rolling ability under drought stress conditions as an indicator of plant water status.…”

Section: Discussionmentioning

confidence: 99%

Relationship between leaf rolling and some physiological parameters in durum wheat under water stress

Ben-Amar¹,

Mahboub²,

Bouizgaren³

et al. 2020

Afr. J. Agric. Res.

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Durum wheat is an important staple food in Morocco. Wheat and barley are mostly grown in drought prone areas in this country. Drought is the most limiting factor under Mediterranean climate. Leaf rolling ability has been identified as a potential selection criterion for drought tolerance in cereals. The objective of this study is to test this hypothesis. The role of leaf rolling in water stress tolerance was assessed in eleven Moroccan wheat cultivars. Trials were conducted under greenhouse conditions and three watering regimes simulating different drought levels were applied. Leaf rolling, leaf area, leaf specific weight and relative water content were recorded. The results indicated that the studied cultivars have shown significant differences in their leaf rolling (LR) under water deficit. The varieties 2777 and Irden showed the highest LR scored under these constraints. The variety Marjana showed the lowest LR score and expressed no LR ability under non limited irrigation treatment. Strong correlation have been observed between LR and relative water content (RWC) (r=0.923), and negative correlation was observed between LR and leaf area (LA, r=-0.783). Cultivars with high LR scores showed their capacity to control the negative impacts of water stress by keeping their physiological traits to adequate levels in order to maintain the main physiological activities of the plants. This result showed the important role of LR in water stress tolerance in the studied durum wheat cultivars.

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“…The moisture balance in the root systems ensures the productivity in several crops. According Nemeskéri et al (2012), during short-term drought intensive root elongation to the deeper part of the soil profile and the partial or total stomatal closure provide the avoidance of water loss for the plants. Even mild water stress can reduce the rate of leaf area development leading to lower photosynthetic activity and low amount of produced biomass.…”

Section: Root Lengthmentioning

confidence: 99%

Assessment of drought tolerance of peanut cultivars based on physiological and yield traits in a semiarid environment

Pereira

Albuquerque

Filho

et al. 2016

Agricultural Water Management

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The regular water supply during life cycle is essential to determine the yield in the legumes. In semiarid environments, the irregular rainfall and high temperature influence the phenology of crops impairing the yield. Peanut is an oleaginous crop with broad adaptation to tropical and semiarid climates, but yield is often harmed when plants face water irregularities during reproductive phase. The recommendation of cultivars tolerant to environments with water-limitation is indispensable to farmers in order to ensure reasonable production when drought settles down. Here, we evaluating peanut bred lines in order to assess drought tolerance based on physiological and yield traits, in greenhouse and field assays. In greenhouse experiment, 2 genotypes (BR 1, drought tolerant and the sensible LViPE-06) and 2 descendant bred lines (earliness-LBM Branco and a mid-runner, LBR Branco) were submitted to 21 days of total water supression. Diffusive resistance, transpiration and leaf water potential were measured by porometer (LI 1600), from fully expanded leaves at mid canopy. Root length was also measured at final period of water stress. Further, in a 2-year field experiment carried out in semiarid environment (Barbalha, CE, Brazil), the genotypes were evaluated under rainfed and irrigation, aiming to estimating the yield trait and the efficiency of drought tolerance. Physiological and yield traits of all genotypes were altered under water stress and significant responses were observed. Both top lines showed physiological ability to tolerance to drought, but LBM Branco, an earliness and upright line, was classified as drought tolerant showing behavior near to BR 1. The losses in pod and seed yield were low, comparing to runner parent (LViPE-06). LBR Branco showed an intermediary performance between parents and was classified as moderately tolerant. Based on physiological and agronomic performances, LBM Branco can later be recommended for management in semiarid environment.

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Defence Strategies of Annual Plants Against Drought

Cited by 3 publications

References 120 publications

Functional trait trade‐off and species abundance: insights from a multi‐decadal study

Functional trait trade‐off and species abundance: insights from a multi‐decadal study

Relationship between leaf rolling and some physiological parameters in durum wheat under water stress

Assessment of drought tolerance of peanut cultivars based on physiological and yield traits in a semiarid environment

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