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ARS Home » Research » Research Project #434815

Research Project: Understanding Genetic and Physiological Bases of Salt Tolerance in Almond Rootstocks

Location: Agricultural Water Efficiency and Salinity Research

Project Number: 2036-13210-012-02-T
Project Type: Trust Fund Cooperative Agreement

Start Date: Oct 1, 2017
End Date: Jul 31, 2019

Objective:
1. Evaluation of almond rootstocks to determine their tolerance response to a range of salt concentrations. 2. characterizing different almond genotypes based on different components of salt tolerance mechanism. 3.Study global changes in the gene expression profiles under normal versus salt stress conditions in almond rootsctock.

Approach:
In this proposed work, we plan to establish a relationship between geness involved in salt stress and phenotypic differences among different genotypes in response to salinity treatment. On top of the 10 genes used for the expression analysis in ear 1, we will include 14 additional genes for Year 2. Table 1 shows list of genes along with classification of each into components of salt tolerance mechanism that include Na effluc from root to soil, sequestration of Na in cauoles, tetrieval of Na from xylem, antioxidants and organic solute synthesis and signal transduction. Thus, evaluation of the expression of these candidate genes will help s in characterizing genotypes based on different components of the salt tolerance mechanism. This informatin will be extrememly valuable to almond breeders and genetics in making crosses and combining different components of salt tolerancemechanism into a single genotype that may result in development of a highly tolerant rootstock to salt.