A Simple and Low-Cost Strategy to Improve Conidial Yield and Stress Resistance of Through Optimizing Illumination Conditions

Overview

Journal J Fungi (Basel)

Date 2022 Jan 20

PMID 35049990

Authors

Yifan Li

Xiya Meng

Degang Guo

Jia Gao

Qiwei Huang

Jian Zhang

Reinhard Fischer

Qirong Shen

Zhenzhong Yu

Affiliations

Soon will be listed here.

Abstract

Light is perceived by photoreceptors in fungi and further integrated into the stress-activated MAPK HOG pathway, and thereby potentially activates the expression of genes for stress responses. This indicates that the precise control of light conditions can likely improve the conidial yield and stress resistance to guarantee the low cost and long shelf life of -based biocontrol agents and biofertilizers. In this study, effects of wavelengths and intensities of light on conidial yield and stress tolerance to osmotic, oxidative and pH stresses in were investigated. We found that 2 μmol photons/(m × s) of blue light increased the conidial yield more than 1000 folds as compared to dark condition and simultaneously enhanced conidial stress resistance. The enhanced conidial stress resistance is probably due to the upregulated stress-related genes in blue light, which is under the control of the blue light receptor BLR1 and the MAP kinase HOG1.

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