Tolerance evaluation and clustering of fourteen tomato cultivars grown under mild and severe drought conditions

Aghaie, Peyman; Tafreshi, Seyed Ali Hosseini; Ebrahimi, Mohammad Ali; Haerinasab, Maryam

doi:10.1016/j.scienta.2017.12.041

Cited by 81 publications

(38 citation statements)

References 59 publications

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“…In the current study, the LRWC decreased prominently in the saltsensitive group (Z0102, Z9648, Z9612, and Z7780) compared with the salt-tolerant group. Previous studies corroborated this result, suggesting that salt-sensitive genotypes may not be able to uphold the water status as they accumulate more soluble salts compared with salt-tolerant genotypes (Al Kharusi et al 2017;Sarabi et al 2017;Aghaie et al 2018). Furthermore, a highly significant positive correlation was found between the LRWC and the shoot-root K + /Na + ratio (Table 3).…”

Section: Discussionsupporting

confidence: 64%

Screening and evaluation of reliable traits of upland cotton (Gossypium hirsutum L.) genotypes for salt tolerance at the seedling growth stage

et al. 2020

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Background: Salt stress significantly inhibits the growth, development, and productivity of cotton because of osmotic, ionic, and oxidative stresses. Therefore, the screening and development of salt tolerant cotton cultivars is a key issue towards sustainable agriculture. This study subjected 11 upland cotton genotypes at the seedling growth stage to five different salt concentrations and evaluated their salt tolerance and reliable traits. Results: Several morpho-physiological traits were measured after 10 days of salinity treatment and the salt tolerance performance varied significantly among the tested cotton genotypes. The optimal NaCl concentration for the evaluation of salt tolerance was 200 mmol•L − 1. Membership function value and salt tolerance index were used to identify the most consistent salt tolerance traits. Leaf relative water content and photosynthesis were identified as reliable indicators for salt tolerance at the seedling stage. All considered traits related to salt tolerance indices were significantly and positively correlated with each other except for malondialdehyde. Cluster heat map analysis based on the morpho-physiological salt tolerance-indices clearly discriminated the 11 cotton genotypes into three different salt tolerance clusters. Cluster I represented the salt-tolerant genotypes (Z9807, Z0228, and Z7526) whereas clusters II (Z0710, Z7514, Z1910, and Z7516) and III (Z0102, Z7780, Z9648, and Z9612) represented moderately salttolerant and salt-sensitive genotypes, respectively. Conclusions: A hydroponic screening system was established. Leaf relative water content and photosynthesis were identified as two reliable traits that adequately represented the salt tolerance of cotton genotypes at the seedling growth stage. Furthermore, three salt-tolerant genotypes were identified, which might be used as genetic resources for the salt-tolerance breeding of cotton.

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Section: Discussionsupporting

confidence: 64%

Screening and evaluation of reliable traits of upland cotton (Gossypium hirsutum L.) genotypes for salt tolerance at the seedling growth stage

et al. 2020

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“…Such responses strongly depend on the genetic background, leading to the necessity of screening different genotypes/accessions for drought tolerance. Genotype specificity has been depicted in tomato response to WD for different agronomic traits [35][36][37]. The present study highlighted a strong genotype-dependent variation under WD at both the phenotype and transcriptome levels.…”

Section: Discussionsupporting

confidence: 54%

Integration of QTL, Transcriptome and Polymorphism Studies Reveals Candidate Genes for Water Stress Response in Tomato

Diouf

Albert

Duboscq

et al. 2020

Genes

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Water deficit (WD) leads to significant phenotypic changes in crops resulting from complex stress regulation mechanisms involving responses at the physiological, biochemical and molecular levels. Tomato growth and fruit quality have been shown to be significantly affected by WD stress. Understanding the molecular mechanism underlying response to WD is crucial to develop tomato cultivars with relatively high performance under low watering conditions. Transcriptome response to WD was investigated through the RNA sequencing of fruit and leaves in eight accessions grown under two irrigation conditions, in order to get insight into the complex genetic regulation of WD response in tomato. Significant differences in genotype WD response were first observed at the phenotypic level for fruit composition and plant development traits. At the transcriptome level, a total of 14,065 differentially expressed genes (DEGs) in response to WD were detected, among which 7393 (53%) and 11,059 (79%) were genotype- and organ-specific, respectively. Water deficit induced transcriptome variations much stronger in leaves than in fruit. A significant effect of the genetic background on expression variation was observed compared to the WD effect, along with the presence of a set of genes showing a significant genotype x watering regime interaction. Integrating the DEGs with previously identified WD response quantitative trait loci (QTLs) mapped in a multi-parental population derived from the crossing of the eight genotypes narrowed the candidate gene lists to within the confidence intervals surrounding the QTLs. The results present valuable resources for further study to decipher the genetic determinants of tomato response to WD.

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“…This increasing temperature may have contributed to the degradation of photosynthetic pigments, or even alteration in the biosynthesis of these pigments because they were reduced. According to [ 49 ], these cited factors are considered the main cause of pigment reduction in stress situations. Reduced chlorophyll content also may be due to lower photosynthesis of plants, and oxidative stress.…”

Section: Discussionmentioning

confidence: 99%

Soybean Plant Metabolism under Water Deficit and Xenobiotic and Antioxidant Agent Application

Schneider

Müller

Klein

et al. 2020

Biology

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The aim was to evaluate the interactive effects on biochemistry and physiology of soybean plants exposed to simultaneous xenobiotic and water deficit stresses, and the possible attenuation of plant damage by an antioxidant agent. Soybean plants were submitted to eight different soil water potentials, in two experiments (first experiment: −0.96, −0.38, −0.07, −0.02 MPa, and second experiment: −3.09, −1.38, −0.69, −0.14 MPa), xenobiotic, and antioxidant agent applications. Was observed a reduction in water status, gas exchange, photosynthetic pigments, photosystem II quantum yield, and increased leaf temperature in plants under low water availability. Water deficit also induced oxidative stress by the increased production of reactive oxygen species, cellular and molecular damage, and induction of the antioxidant defense metabolism, reduction of gas exchange, water status, and photosynthetic efficiency. The xenobiotic application also caused changes, with deleterious effects more pronounced in low soil water availability, mainly the reactive oxygen species production, consequently the antioxidant activity, and the oxidative damages. This indicates different responses to the combination of stresses. Antioxidant enzyme activity was reduced by the application of the antioxidant agent. Principal Component Analysis showed a relation with the antioxidant agent and reactive oxygen species, which is probably due to signaling function, and with defense antioxidant system, mainly glutathione, represented by thiols.

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Tolerance evaluation and clustering of fourteen tomato cultivars grown under mild and severe drought conditions

Cited by 81 publications

References 59 publications

Screening and evaluation of reliable traits of upland cotton (Gossypium hirsutum L.) genotypes for salt tolerance at the seedling growth stage

Screening and evaluation of reliable traits of upland cotton (Gossypium hirsutum L.) genotypes for salt tolerance at the seedling growth stage

Integration of QTL, Transcriptome and Polymorphism Studies Reveals Candidate Genes for Water Stress Response in Tomato

Soybean Plant Metabolism under Water Deficit and Xenobiotic and Antioxidant Agent Application

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