Special Issue "Mycorrhizal Fungal Roles in Stress Tolerance of Plants"

Submission Deadline: 28 February 2022 (closed)
Guest Editors

Prof. Qiang-Sheng Wu, Yangtze University, China; wuqiangsh@163.com


Assoc. Prof. Ying-Ning Zou, Yangtze University, China; zouyingning@163.com


Assist. Prof. Bhoopander Giri, University of Delhi, India; bhoopg@yahoo.com


Prof. Xiancan Zhu, Anhui Normal University, China; zhuxiancan@ahnu.edu.cn


Dr. Yanbo Hu, Northeast Forestry University, China; huybnefu@yahoo.com


Prof. Nong Zhou, Chongqing Three Gorges University, China; erhaizn@126.com

Summary

During plant growth, plants often experience various biotic and abiotic stresses that strongly limit plant growth, disrupt the normal physiological and biochemical metabolism in cells of host plants, which in turn lead to massive burst of reactive oxygen species, plasma membrane disruption, and RNA degradation. Thus, biotic and abiotic stresses have been made an important limiting factor in plant growth.


At the same time, there are many beneficial microorganisms in the plant rhizosphere, including arbuscular mycorrhizal (AM) fungi. This AM fungus can establish a reciprocal symbiosis with roots of about 72% of terrestrial plants, viz., arbuscular mycorrhizas. Mycorrhizal fungi help the host plant to absorb water and mineral nutrients from the soil and in turn receive carbohydrates and/or fatty acids from the host plant for its growth.


Results from numerous field and potted experiments have shown that AM fungi possess multiple pathways to respond to and enhance host resistance to biotic and abiotic stresses. For example, AM fungi themselves absorb water directly from the soil and transfer it rapidly to cortical cells containing arbuscules through mycelial channels without septa and then unload it in the host. In addition, in host plants, many cellular metabolites such as fatty acids, polyamines, and sugars are directed toward resistance to host resistance. Moreover, some stress-responsive genes such as aquaporin proteins of both AM fungi and host plants work synergistically to promote water uptake or loss in the host. The various intracellular responses may form a complex regulatory network. More studies are needed to develop the regulatory network.


This special issue works on the above mentioned topic, along with the latest advances. The manuscripts are welcome to focus on the following topics, but are not limited to them:

1) Strategies of mycorrhizal fungi themselves in response to stress.

2) Cellular responces of mycorrhizal plants to stress.

3) AM fungi respond to plant stress resistance in physiological levels.

4) Molecular mechanisms regarding AM fungal roles in plant stress resistance, especially based on omics analysis.

5) Combination of AM fungi and other microorganisms mitigates stress resistance of host plants.

6) Expectation of the effect of inoculation of AM fungi in the field on plant resistance or growth.


Keywords
Drought, Mycorrhiza, Plant Disease, Salinity, Stress-Responsive Gene

Published Papers
  • Mycorrhiza improves cold tolerance of Satsuma orange by inducing antioxidant enzyme gene expression
  • Abstract A potted experiment was carried out to study the effect of an arbuscular mycorrhizal fungus (Diversispora versiformis) and arbuscular mycorrhizal like fungus (Piriformospora indica) on antioxidant enzyme defense system of Satsuma orange (Citrus sinensis cv. Oita 4) grafted on Poncirus trifoliata under favourable temperature (25°C) and cold temperature (0°C) for 12 h. Such short-term treatment of cold temperature did not cause any significant change in root fungal colonization and spore density in soil. Under cold stress, D. versiformis inoculation did not change the activity of superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) in leaves and roots, whereas P. indica… More
  •   Views:766       Downloads:350        Download PDF


  • Mycorrhiza improves plant growth and photosynthetic characteristics of tea plants in response to drought stress
  • Abstract Tea plants are sensitive to soil moisture deficit, with the level of soil water being a critical factor affecting their growth and quality. Arbuscular mycorrhizal fungi (AMF) can improve water and nutrient absorption, but it is not clear whether AMF can improve the photosynthetic characteristics of tea plants. A potted study was conducted to determine the effects of Claroideoglomus etunicatum on plant growth, leaf water status, pigment content, gas exchange, and chlorophyll fluorescence parameters in Camellia sinensis cv. Fuding Dabaicha under well-watered (WW) and drought stress (DS) conditions. Root mycorrhizal colonization and soil hyphal length were significantly reduced by the… More
  •   Views:530       Downloads:420        Download PDF