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Genome-Wide Identification and Expression Profiles of Late Embryogenesis-Abundant (LEA) Genes during Grain Maturation in Wheat (Triticum aestivum L.)

1
Key Laboratory of Wheat Biology and Genetic Improvement for Low & Middle Yangtze Valley, Ministry of Agriculture/Lixiahe Agricultural Institute of Jiangsu Province, Yangzhou 225007, China
2
Yangzhou University, Yangzhou 225009, China
*
Author to whom correspondence should be addressed.
Genes 2019, 10(9), 696; https://doi.org/10.3390/genes10090696
Received: 21 July 2019 / Revised: 1 September 2019 / Accepted: 6 September 2019 / Published: 10 September 2019
(This article belongs to the Section Plant Genetics and Genomics)
Late embryogenesis-abundant (LEA) genes play important roles in plant growth and development, especially the cellular dehydration tolerance during seed maturation. In order to comprehensively understand the roles of LEA family members in wheat, we carried out a series of analyses based on the latest genome sequence of the bread wheat Chinese Spring. 121 Triticum aestivum L. LEA (TaLEA) genes, classified as 8 groups, were identified and characterized. TaLEA genes are distributed in all chromosomes, most of them with a low number of introns (≤3). Expression profiles showed that most TaLEA genes expressed specifically in grains. By qRT-PCR analysis, we confirmed that 12 genes among them showed high expression levels during late stage grain maturation in two spring wheat cultivars, Yangmai16 and Yangmai15. For most genes, the peak of expression appeared earlier in Yangmai16. Statistical analysis indicated that expression level of 8 genes in Yangmai 16 were significantly higher than Yangmai 15 at 25 days after anthesis. Taken together, our results provide more knowledge for future functional analysis and potential utilization of TaLEA genes in wheat breeding. View Full-Text
Keywords: late embryogenesis-abundant gene; wheat (Triticum aestivum L.); grain maturation; genome-wide identification late embryogenesis-abundant gene; wheat (Triticum aestivum L.); grain maturation; genome-wide identification
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Liu, D.; Sun, J.; Zhu, D.; Lyu, G.; Zhang, C.; Liu, J.; Wang, H.; Zhang, X.; Gao, D. Genome-Wide Identification and Expression Profiles of Late Embryogenesis-Abundant (LEA) Genes during Grain Maturation in Wheat (Triticum aestivum L.). Genes 2019, 10, 696.

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