Functional analysis of the taproot and fibrous roots of Medicago truncatula: Sucrose and proline catabolism primary response to water deficit

The transcriptome ofThinopyrum elongatumunder water deficit stress was analyzed using RNA-Seq technology. The results showed that genes involved in processes of amplification of stress signaling, reductions in oxidative damage, creation of protectants, and roots development were expressed differently, which played an important role in the response to water deficit. TheTh. elongatumtranscriptome research highlights the activation of a large set of water deficit-related genes in this species and provides a valuable resource for future functional analysis of candidate genes in the water deficit stress response.

Download Full-text

Differential response to water deficit stress and shade in two wheat (Triticum durum Desf.) cultivars: growth, water relations, osmolyte accumulation and photosynthetic pigments

Pakistan Journal of Botany ◽

10.30848/pjb2019-4(4) ◽

2019 ◽

Vol 51 (4) ◽

Cited By ~ 1

Author(s):

Fatma Gharbi ◽

Asma Guizani ◽

Lobna Zribi ◽

Hela Ben Ahmed ◽

Florent Mouillot

Keyword(s):

Water Deficit ◽

Water Relations ◽

Photosynthetic Pigments ◽

Triticum Durum ◽

Differential Response ◽

Water Deficit Stress ◽

Osmolyte Accumulation ◽

Triticum Durum Desf ◽

Response To Water

Download Full-text

Tolerance mechanisms in maize identified through phenotyping and transcriptome analysis in response to water deficit stress

Physiology and Molecular Biology of Plants ◽

10.1007/s12298-021-01003-4 ◽

2021 ◽

Author(s):

Mandapaka Maheswari ◽

Yellisetty Varalaxmi ◽

Basudeb Sarkar ◽

Nakka Ravikumar ◽

Maddi Vanaja ◽

...

Keyword(s):

Water Deficit ◽

Transcriptome Analysis ◽

Water Deficit Stress ◽

Tolerance Mechanisms ◽

Response To Water

Download Full-text

Candidate genes and SNPs associated with stomatal conductance under drought stress in Vitis

BMC Plant Biology ◽

10.1186/s12870-020-02739-z ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Massimiliano Trenti ◽

Silvia Lorenzi ◽

Pier Luigi Bianchedi ◽

Daniele Grossi ◽

Osvaldo Failla ◽

...

Keyword(s):

Drought Stress ◽

Stomatal Conductance ◽

Candidate Genes ◽

Water Deficit ◽

Genetic Basis ◽

Phenotypic Diversity ◽

Snp Array ◽

A Genome ◽

Raffinose Synthase ◽

Response To Water

Abstract Background Understanding the complexity of the vine plant’s response to water deficit represents a major challenge for sustainable winegrowing. Regulation of water use requires a coordinated action between scions and rootstocks on which cultivars are generally grafted to cope with phylloxera infestations. In this regard, a genome-wide association study (GWAS) approach was applied on an ‘ad hoc’ association mapping panel including different Vitis species, in order to dissect the genetic basis of transpiration-related traits and to identify genomic regions of grape rootstocks associated with drought tolerance mechanisms. The panel was genotyped with the GrapeReSeq Illumina 20 K SNP array and SSR markers, and infrared thermography was applied to estimate stomatal conductance values during progressive water deficit. Results In the association panel the level of genetic diversity was substantially lower for SNPs loci (0.32) than for SSR (0.87). GWAS detected 24 significant marker-trait associations along the various stages of drought-stress experiment and 13 candidate genes with a feasible role in drought response were identified. Gene expression analysis proved that three of these genes (VIT_13s0019g03040, VIT_17s0000g08960, VIT_18s0001g15390) were actually induced by drought stress. Genetic variation of VIT_17s0000g08960 coding for a raffinose synthase was further investigated by resequencing the gene of 85 individuals since a SNP located in the region (chr17_10,497,222_C_T) was significantly associated with stomatal conductance. Conclusions Our results represent a step forward towards the dissection of genetic basis that modulate the response to water deprivation in grape rootstocks. The knowledge derived from this study may be useful to exploit genotypic and phenotypic diversity in practical applications and to assist further investigations.

Download Full-text

Analysis of Cytosine Methylation Pattern in Response to Water Deficit in Pea Root Tips

Plant Biology ◽

10.1055/s-2002-37398 ◽

2002 ◽

Vol 4 (6) ◽

pp. 694-699 ◽

Cited By ~ 131

Author(s):

M. Labra ◽

A. Ghiani ◽

S. Citterio ◽

S. Sgorbati ◽

F. Sala ◽

...

Keyword(s):

Water Deficit ◽

Cytosine Methylation ◽

Methylation Pattern ◽

Root Tips ◽

Pea Root ◽

Response To Water

Download Full-text

Relationships between physiological traits and productivity of sugarcane in response to water deficit

The Journal of Agricultural Science ◽

10.1017/s0021859612000834 ◽

2012 ◽

Vol 152 (1) ◽

pp. 104-118 ◽

Cited By ~ 16

Author(s):

M. DE A. SILVA ◽

J. L. JIFON ◽

J. A. G. DA SILVA ◽

C. M. DOS SANTOS ◽

V. SHARMA

Keyword(s):

Water Deficit ◽

Field Studies ◽

Water Deficit Stress ◽

Chlorophyll Contents ◽

Physiological Variables ◽

Drought Tolerant ◽

Relative Water ◽

Leaf Relative Water Content ◽

Sugarcane Productivity ◽

Response To Water

SUMMARYThe relationships between physiological variables and sugarcane productivity under water deficit conditions were investigated in field studies during 2005 and 2006 in Weslaco, Texas, USA. A total of 78 genotypes and two commercial varieties were studied, one of which was drought-tolerant (TCP93-4245) and the other drought-sensitive (TCP87-3388). All genotypes were subjected to two irrigation regimes: a control well-watered treatment (wet) and a moderate water-deficit stress (dry) treatment for a period of 90 days. Maximum quantum efficiency of photosystem II (Fv/Fm), estimated chlorophyll content (SPAD index), leaf temperature (LT), leaf relative water content (RWC) and productivity were measured. The productivity of all genotypes was, on average, affected negatively; however, certain genotypes did not suffer significant reduction. Under water deficit, the productivity of the genotypes was positively and significantly correlated with Fv/Fm, SPAD index and RWC, while LT had a negative correlation. These findings suggest that genotypes exhibiting traits of high RWC values, high chlorophyll contents and high photosynthetic radiation use efficiency under low moisture availability should be targeted for selection and variety development in programmes aimed at improving sugarcane for drought prone environments.

Download Full-text