Photobiological and lipidic responses reveal the drought tolerance of Aster tripolium cultivated under severe and moderate drought: Perspectives for arid agriculture in the mediterranean

AbstractWater deficit has devastating impacts on legume production, particularly with the current abrupt climate changes in arid environments. The application of plant growth-promoting rhizobacteria (PGPR) is an effective approach for producing natural nitrogen and attenuating the detrimental effects of drought stress. This study investigated the influence of inoculation with the PGPR Rhizobium leguminosarum biovar viciae (USDA 2435) and Pseudomonas putida (RA MTCC5279) solely or in combination on the physio-biochemical and agronomic traits of five diverse Vicia faba cultivars under well-watered (100% crop evapotranspiration [ETc]), moderate drought (75% ETc), and severe drought (50% ETc) conditions in newly reclaimed poor-fertility sandy soil. Drought stress substantially reduced the expression of photosynthetic pigments and water relation parameters. In contrast, antioxidant enzyme activities and osmoprotectants were considerably increased in plants under drought stress compared with those in well-watered plants. These adverse effects of drought stress reduced crop water productivity (CWP) and seed yield‐related traits. However, the application of PGPR, particularly a consortium of both strains, improved these parameters and increased seed yield and CWP. The evaluated cultivars displayed varied tolerance to drought stress: Giza-843 and Giza-716 had the highest tolerance under well-watered and moderate drought conditions, whereas Giza-843 and Sakha-4 were more tolerant under severe drought conditions. Thus, co-inoculation of drought-tolerant cultivars with R. leguminosarum and P. putida enhanced their tolerance and increased their yield and CWP under water-deficit stress conditions. This study showed for the first time that the combined use of R. leguminosarum and P. putida is a promising and ecofriendly strategy for increasing drought tolerance in legume crops.

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Molecular study of drought response in the Mediterranean conifer Pinus pinaster Ait.: Differential transcriptomic profiling reveals constitutive water deficit‐independent drought tolerance mechanisms

Ecology and Evolution ◽

10.1002/ece3.6613 ◽

2020 ◽

Vol 10 (18) ◽

pp. 9788-9807 ◽

Cited By ~ 1

Author(s):

Nuria de María ◽

María Ángeles Guevara ◽

Pedro Perdiguero ◽

María Dolores Vélez ◽

José Antonio Cabezas ◽

...

Keyword(s):

Drought Tolerance ◽

Water Deficit ◽

Pinus Pinaster ◽

Molecular Study ◽

Drought Response ◽

Tolerance Mechanisms ◽

Transcriptomic Profiling ◽

Pinus Pinaster Ait ◽

The Mediterranean

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Fertilization regime interacts with fall temperature in the nursery to determine the frost and drought tolerance of the Mediterranean oak Quercus ilex subsp. ballota

Forest Ecology and Management ◽

10.1016/j.foreco.2014.07.022 ◽

2014 ◽

Vol 331 ◽

pp. 50-59 ◽

Cited By ~ 10

Author(s):

Norberto Heredia-Guerrero ◽

Juan A. Oliet ◽

Pedro Villar-Salvador ◽

Luis F. Benito ◽

Juan L. Peñuelas

Keyword(s):

Drought Tolerance ◽

Quercus Ilex ◽

The Mediterranean ◽

Fall Temperature

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Physiology of drought tolerance and cold hardiness of the Mediterranean tiger moth Cymbalophora pudica during summer diapause.

Journal of Insect Physiology ◽

10.1016/s0022-1910(97)00047-4 ◽

1998 ◽

Vol 44 (2) ◽

pp. 165-173 ◽

Cited By ~ 45

Author(s):

Vladimir Kostal ◽

Jan Sula ◽

Petr Simek

Keyword(s):

Drought Tolerance ◽

Cold Hardiness ◽

Summer Diapause ◽

Tiger Moth ◽

The Mediterranean

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Can wild lentil genotypes help improve water use and transpiration efficiency in cultivated lentil?

Plant Genetic Resources ◽

10.1017/s1479262117000399 ◽

2018 ◽

Vol 16 (5) ◽

pp. 459-468 ◽

Cited By ~ 1

Author(s):

Linda Yuya Gorim ◽

Albert Vandenberg

Keyword(s):

Drought Tolerance ◽

Water Use ◽

Drought Indices ◽

Severe Drought ◽

Transpiration Efficiency ◽

Drought Tolerant ◽

Drought Conditions ◽

Moderate Drought ◽

Plant Level ◽

Wild Lentil

AbstractClimate change forecasts point to increased frequency of droughts which may affect plant growth. For protein crops such as lentil, genetic improvement of both water use and drought tolerance is necessary. Wild lentil species are known to have evolved in drought prone areas and can be introgressed into cultivated lentil, making them candidates for the evaluation of high transpiration efficiency (TE) and drought tolerance. We assessed TE, water use and drought tolerance at the plant level for five wild lentil species and in cultivated lentil. Under fully watered and moderate drought conditions, wild lentil genotypes consumed significantly less water to fix similar or more dry matter compared with their cultivated counterparts. Under severe drought conditions, the wild lentil genotype L. ervoides IG 72815 had significantly higher TE compared with L. culinaris Eston. Lens ervoides L-01-827A, had significantly higher yield compared with all other species in the presence or absence of drought and showed significantly higher (α = 5%) TE under moderate drought. Drought susceptibility index was identified as a tool to identify drought-tolerant lentil genotypes grown under severe drought. The numerous small seeds of wild lentil made it difficult to estimate drought indices that are weight based and require formulae that incorporate seed numbers.

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Drought tolerance in the Mediterranean species Quercus coccifera, Quercus ilex, Pinus halepensis, and Juniperus phoenicea

Photosynthetica ◽

10.1007/s11099-007-0037-x ◽

2007 ◽

Vol 45 (2) ◽

Cited By ~ 55

Author(s):

F. J. Baquedano ◽

F.J. Castillo

Keyword(s):

Drought Tolerance ◽

Quercus Ilex ◽

Pinus Halepensis ◽

Mediterranean Species ◽

Quercus Coccifera ◽

Juniperus Phoenicea ◽

The Mediterranean

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Early assessment of drought tolerance in oil palm D × P progenies using growth and physiological characters in seedling stage

Plant Genetic Resources ◽

10.1017/s1479262118000151 ◽

2018 ◽

Vol 16 (6) ◽

pp. 544-554 ◽

Cited By ~ 1

Author(s):

Saowapa Duangpan ◽

Pimchanok Buapet ◽

Satanan Sujitto ◽

Theera Eksomtramage

Keyword(s):

Drought Stress ◽

Drought Tolerance ◽

Oil Palm ◽

Growth Traits ◽

Proline Content ◽

Rapid Screening ◽

Tolerance Index ◽

Severe Drought ◽

Early Assessment ◽

Moderate Drought

AbstractDrought is a major constraint to oil palm plantation in many regions relying on rainfall. One strategy to overcome this problem is to develop drought-tolerant cultivars through screening and selection. Drought tolerance assessment based on growth and physiological traits provides an alternative approach for rapid screening especially in tree crops. The aims of this study were to determine the contribution of some growth and physiological parameters to drought response variation in oil palm seedling and to use those parameters to evaluate relative drought stress tolerance in tenera oil palm progenies. Eight D × P progenies were grown under well-watered, moderate and severe stressed conditions for a total of 6 months. Data on growth traits, maximum quantum yield (Fv/Fm), SPAD value and proline content were recorded. Principal component analysis (PCA) on studied traits revealed that PC1 and PC2 explained 74.57 and 76.80% of total variance in moderate and severe drought treatments, respectively. Major contributions towards the variation of control and drought-treated plants were identified and appeared to be growth traits in moderate drought stress and growth trait plus proline content in severe drought stress. According to drought tolerance index, PCA analysis and ranking method using integrated PCA values, PSU-106 and PSU-206 were identified to be relatively high tolerant to severe drought stress, while PSU-106, PSU-128, PSU-206 and PSU-208 were tolerant to moderate drought stress. Field validation of D × P progenies selected as drought tolerance is recommended to establish this indirect selection approach in oil palm breeding programme.

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