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Crop and Pasture Science Crop and Pasture Science Society
Plant sciences, sustainable farming systems and food quality
RESEARCH ARTICLE

Biochar actions for the mitigation of plant abiotic stress

Shahin Imran https://orcid.org/0000-0002-7423-9984 A , Prosenjit Sarker B , Md. Najmol Hoque C , Newton Chandra Paul A , Md. Asif Mahamud D , Jotirmoy Chakrobortty E , Md. Tahjib-Ul-Arif F , Arafat Abdel Hamed Abdel Latef G , Mirza Hasanuzzaman https://orcid.org/0000-0002-0461-8743 H * and Mohammad Saidur Rhaman https://orcid.org/0000-0003-0090-6665 I *
+ Author Affiliations
- Author Affiliations

A Department of Agronomy, Khulna Agricultural University, Khulna 9100, Bangladesh.

B Independent Researcher, Mymensingh, Bangladesh.

C Department of Biochemistry and Molecular Biology, Khulna Agricultural University, Khulna 9100, Bangladesh.

D Department of Agricultural Chemistry, Khulna Agricultural University, Khulna 9100, Bangladesh.

E Department of Soil Science, Khulna Agricultural University, Khulna 9100, Bangladesh.

F Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.

G Botany and Microbiology Department, Faculty of Science, South Valley University, Qena 83523, Egypt.

H Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh.

I Department of Seed Science and Technology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.


Handling Editor: Zakaria Solaiman

Crop & Pasture Science - https://doi.org/10.1071/CP21486
Submitted: 30 June 2021  Accepted: 22 November 2021   Published online: 28 February 2022

© 2022 The Author(s) (or their employer(s)). Published by CSIRO Publishing

Abstract

Abiotic stresses are the dominant constraints to successful crop production in the modern era. Over the past few decades, researchers have devised various techniques to ease the effects of abiotic stresses on crop plants. Biochar is a vital eco-friendly biostimulant that mostly increases crop production and alleviates the adverse effects of different abiotic stresses. It improves crop yield as a fertiliser and soil quality as a soil conditioner. Biochar amendment in the soil is gaining popularity these days. This is because it improves the physio-biochemical and biological properties of soil. Biochar enhances abiotic stress tolerance as well as growth and yield of plants by modulating ionic homeostasis, photosynthetic apparatus, antioxidant machineries, reducing heavy metal accumulations and oxidative damages. However, the stress-relieving roles of biochar have not been thoroughly assembled. This review summarises current reports of biochar application and discusses the potential roles of biochar amendment in soil for crop growth and production under stress and non-stress conditions. This review also covers the possible mechanisms for how abiotic stress mitigation is accomplished in plants and the limitations and prospects of biochar application in agriculture.

Keywords: abiotic stress, antioxidants, biochar, crop growth, ion homeostasis, oxidative damage, soil salinity, stress tolerance.


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