Affiliation:
1. College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
2. The Characteristic Laboratory of Crop Germplasm Innovation and Application, Provincial Department of Education, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
Abstract
The mesocotyl is of great significance in seedling emergence and in responding to biotic and abiotic stress in maize. The NAM, ATAF, and CUC2 (NAC) transcription factor family plays an important role in maize growth and development; however, its function in the elongation of the maize mesocotyl is still unclear. In this study, we found that the mesocotyl length in zmnac17 loss-of-function mutants was lower than that in the B73 wild type. By using transcriptomic sequencing technology, we identified 444 differentially expressed genes (DEGs) between zmnac17-1 and B73, which were mainly enriched in the “tryptophan metabolism” and “antioxidant activity” pathways. Compared with the control, the zmnac17-1 mutants exhibited a decrease in the content of indole acetic acid (IAA) and an increase in the content of reactive oxygen species (ROS). Our results provide preliminary evidence that ZmNAC17 regulates the elongation of the maize mesocotyl.
Funder
Maize Industry Technology System Genetic and Breeding Positions in Shandong
Taishan Scholars Program of Shandong Province
Shandong Provincial Natural Science Foundation
National Key Research and Development Program of China
Well-Breed Engineering of Shandong province
Innovation Team of Young Scientist in Shandong
Talent Introduction Special Funds of Qingdao Agricultural University
Taishan Leading Talents in Industry Project in Shandong Province
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