Tomato: Grafting to Improve Salt Tolerance

Sánchez-Bel, Paloma; Egea, Isabel; Flores, Francisco B.; Bolarín, Maria C.

doi:10.1002/9783527632930.ch42

Cited by 2 publications

(2 citation statements)

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“…We wanted to elucidate whether SlCBL10 may function as a positive or negative regulator of salt stress tolerance depending on where it predominantly exerts this function. For this, we have used a grafting strategy, since our previous grafting studies showed that the tolerance induced by the rootstock in the shoot genotype was related to its ability to regulate the transport of saline ions throughout the plant growth cycle (Estañ et al, 2005; Sanchez‐Bel et al, 2012). Here, WT plants grafted onto SlCBL10 ‐silencing rootstocks were used to study the phenotypic, physiological, and molecular responses underlying salt tolerance.…”

Section: Introductionmentioning

confidence: 99%

A novel function of the tomato CALCINEURIN‐B LIKE 10 gene as a root‐located negative regulator of salt stress

Estrada

Plasencia

Ortíz-Atienza

et al. 2023

Plant Cell & Environment

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Climate change exacerbates abiotic stresses like salinization, negatively impacting crop yield, so development of strategies, like using salt‐tolerant rootstocks, is crucial. The CALCINEURIN B‐LIKE 10 (SlCBL10) gene has been previously identified as a positive regulator of salt tolerance in the tomato shoot. Here, we report a different function of SlCBL10 in tomato shoot and root, as disruption of SlCBL10 only induced salt sensitivity when it was used in the scion but not in the rootstock. The use of SlCBL10 silencing rootstocks (Slcbl10 mutant and RNAi line) improved salt tolerance on the basis of fruit yield. These changes were associated with improved Na+ and K+ homoeostasis, as SlCBL10 silencing reduced the Na+ content and increased the K+ content under salinity, not only in the rootstock but also in the shoot. Improvement of Na+ homoeostasis in Slcbl10 rootstock seems to be mainly due to induction of SlSOS1 expression, while the higher K+ accumulation in roots seems to be mainly determined by expression of LKT1 transporter and SlSKOR channel. These findings demonstrate that SlCBL10 is a negative regulator of salt tolerance in the root, so the use of downregulated SlCBL10 rootstocks may provide a suitable strategy to increase tomato fruit production under salinity.

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Section: Introductionmentioning

confidence: 99%

A novel function of the tomato CALCINEURIN‐B LIKE 10 gene as a root‐located negative regulator of salt stress

Estrada

Plasencia

Ortíz-Atienza

et al. 2023

Plant Cell & Environment

Self Cite

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“…Salt-alkali stress has been considered as a major environmental threat to the entire terrestrial ecosystem, which is one of the main reasons to inhibit the growth, development, and even the yield of crops in the world (Lin et al, 2014 , 2018a , b ; Guo et al, 2015 ). Although there are many ways to improve crop tolerance to salt-alkali stress (Sanchez-Bel et al, 2012 ), there is still a challenge to maintain the food supply as the population of the world continues to increase (Hickey et al, 2019 ; Tyerman et al, 2019 ). It is an important step to increase crop agricultural productivity through in-depth understanding of the genetic and molecular mechanisms for improving crop salt-alkali tolerance.…”

Section: Introductionmentioning

confidence: 99%

Genome-Wide Association Studies of Salt-Alkali Tolerance at Seedling and Mature Stages in Brassica napus

et al. 2022

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Most plants are sensitive to salt-alkali stress, and the degree of tolerance to salt-alkali stress varies from different species and varieties. In order to explore the salt-alkali stress adaptability of Brassica napus, we collected the phenotypic data of 505 B. napus accessions at seedling and mature stages under control, low and high salt-alkali soil stress conditions in Inner Mongolia of China. Six resistant and 5 sensitive materials, respectively, have been identified both in Inner Mongolia and Xinjiang Uygur Autonomous Region of China. Genome-wide association studies (GWAS) for 15 absolute values and 10 tolerance coefficients (TCs) of growth and agronomic traits were applied to investigate the genetic basis of salt-alkali tolerance of B. napus. We finally mapped 9 significant QTLs related to salt-alkali stress response and predicted 20 candidate genes related to salt-alkali stress tolerance. Some important candidate genes, including BnABA4, BnBBX14, BnVTI12, BnPYL8, and BnCRR1, were identified by combining sequence variation annotation and expression differences. The identified valuable loci and germplasms could be useful for breeding salt-alkali-tolerant B.napus varieties. This study laid a foundation for understanding molecular mechanism of salt-alkali stress adaptation and provides rich genetic resources for the large-scale production of B. napus on salt-alkali land in the future.

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Tomato: Grafting to Improve Salt Tolerance

Cited by 2 publications

References 71 publications

A novel function of the tomato CALCINEURIN‐B LIKE 10 gene as a root‐located negative regulator of salt stress

A novel function of the tomato CALCINEURIN‐B LIKE 10 gene as a root‐located negative regulator of salt stress

Genome-Wide Association Studies of Salt-Alkali Tolerance at Seedling and Mature Stages in Brassica napus

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