Sequencing and gene expression studies for Al tolerance in contrasting genotypes of tropical maize

Abstract

The aims of this study were to evaluate the homology of the ZmMATE1 and ZmMATE2 gene sequences with those deposited in the international banks of sequences and quantify the differential expression of the genes ZmMATE1, ZmMATE2, and ZmNrat1 in germplasms of landrace and hybrid maize under aluminum (Al) stress in minimal solution. Fifty-two hybrids from different companies and 50 landrace varieties were genotyped for the genes ZmMATE1 and ZmMATE2. For studies of gene expression, the tolerant (H 44 and V 18) and the sensitive (H 22 and V 25) genotypes were exposed to minimal solution containing 4 mg L -1 of Al for different periods (0

Screening of acid-tolerant hybrid Corn lines and parents using modified acid mineral soil

“…Meanwhile Aluminum toxicity stress on purple corn seedlings can be detected using biochemical indicators (chlorophyll a, chlorophyll b and total chlorophyll, total carotenoids, and lipid [26]. Likewise reported by Caroline, et al [27] that the greater expression difference in the tolerant landrace V 18 variety of the ZmMATE1 gene, suggests that citrate exudation may be the main mechanism of Al tolerance in this genotype.…”