Phytohormonal modulation of the drought stress in soybean: outlook, research progress, and cross-talk

Shifa Shaffique; Saddam Hussain; Sang-Mo Kang; Muhamad Imran; Md Injamum-Ul-Hoque; Muhammad Aaqil Khan; In-Jung Lee

doi:10.3389/fpls.2023.1237295

Phytohormonal modulation of the drought stress in soybean: outlook, research progress, and cross-talk

Front Plant Sci. 2023 Oct 20:14:1237295. doi: 10.3389/fpls.2023.1237295. eCollection 2023.

Authors

Shifa Shaffique¹, Saddam Hussain², Sang-Mo Kang¹, Muhamad Imran³, Md Injamum-Ul-Hoque¹, Muhammad Aaqil Khan⁴, In-Jung Lee¹

Affiliations

¹ Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
² Department of Agronomy, University of Agriculture, Faisalabad, Pakistan.
³ Biosafety Division, National Institute of Agriculture Science, Rural Development Administration, Jeonju, Republic of Korea.
⁴ Department of Chemical and Life Science, Qurtaba University of Science and Information Technology, Peshawar, Pakistan.

Abstract

Phytohormones play vital roles in stress modulation and enhancing the growth of plants. They interact with one another to produce programmed signaling responses by regulating gene expression. Environmental stress, including drought stress, hampers food and energy security. Drought is abiotic stress that negatively affects the productivity of the crops. Abscisic acid (ABA) acts as a prime controller during an acute transient response that leads to stomatal closure. Under long-term stress conditions, ABA interacts with other hormones, such as jasmonic acid (JA), gibberellins (GAs), salicylic acid (SA), and brassinosteroids (BRs), to promote stomatal closure by regulating genetic expression. Regarding antagonistic approaches, cytokinins (CK) and auxins (IAA) regulate stomatal opening. Exogenous application of phytohormone enhances drought stress tolerance in soybean. Thus, phytohormone-producing microbes have received considerable attention from researchers owing to their ability to enhance drought-stress tolerance and regulate biological processes in plants. The present study was conducted to summarize the role of phytohormones (exogenous and endogenous) and their corresponding microbes in drought stress tolerance in model plant soybean. A total of n=137 relevant studies were collected and reviewed using different research databases.

Keywords: drought stress; endogenous; microbes; phytohormones; soybean.

Publication types

Review

Grants and funding

This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIT) (No. 2022R1A2C1008993) Funding : Republic of Korea and Korea Basic Science Institute (National Research Facilities and Equipment Center) grant funded by the Ministry of Education (NRF-2021R1A6C101A416).