Research Progress on the Mechanism of Salt Tolerance in Maize: A Classic Field That Needs New Efforts

Author:

Li Jiawei1,Zhu Qinglin1,Jiao Fuchao12ORCID,Yan Zhenwei3,Zhang Haiyan12,Zhang Yumei12,Ding Zhaohua3,Mu Chunhua3,Liu Xia3,Li Yan3,Chen Jingtang12,Wang Ming12

Affiliation:

1. College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China

2. Dryland-Technology Key Laboratory of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China

3. Shandong Academy of Agricultural Science, Jinan 250100, China

Abstract

Maize is the most important cereal crop globally. However, in recent years, maize production faced numerous challenges from environmental factors due to the changing climate. Salt stress is among the major environmental factors that negatively impact crop productivity worldwide. To cope with salt stress, plants developed various strategies, such as producing osmolytes, increasing antioxidant enzyme activity, maintaining reactive oxygen species homeostasis, and regulating ion transport. This review provides an overview of the intricate relationships between salt stress and several plant defense mechanisms, including osmolytes, antioxidant enzymes, reactive oxygen species, plant hormones, and ions (Na+, K+, Cl−), which are critical for salt tolerance in maize. It addresses the regulatory strategies and key factors involved in salt tolerance, aiming to foster a comprehensive understanding of the salt tolerance regulatory networks in maize. These new insights will also pave the way for further investigations into the significance of these regulations in elucidating how maize coordinates its defense system to resist salt stress.

Funder

National Key Research and Development Program

Well-Breed Engineering of Shandong Province

Innovation Team of Young Scientist in Shandong

Sci-tech Special Commissioner of Tai’an

Doctor Funds of Qingdao Agricultural University

Publisher

MDPI AG

Subject

Plant Science,Ecology,Ecology, Evolution, Behavior and Systematics

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