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Root Rot a Silent Alfalfa Killer in China: Distribution, Fungal, and Oomycete Pathogens, Impact of Climatic Factors and Its Management

Overview
Journal Front Microbiol
Specialty Microbiology
Date 2022 Aug 29
PMID 36033855
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Abstract

Alfalfa plays a significant role in the pasture ecosystems of China's north, northeast, and northwest regions. It is an excellent forage for livestock, improves soil structure, prevents soil erosion, and has ecological benefits. Presently root rot is a significant threat to the alfalfa productivity because of the survival of the pathogens as soil-borne and because of lack of microbial competition in the impoverished nutrient-deficient soils and resistant cultivars. Furthermore, these regions' extreme ecological and environmental conditions predispose alfalfa to root rot. Moisture and temperature, in particular, have a considerable impact on the severity of root rot. Pathogens such as spp. and are predominant, frequently isolated, and of major concern. These pathogens work together as disease complexes, so finding a host genotype resistant to disease complexes is challenging. Approaches to root rot control in these regions include mostly fungicides treatments and cultural practices and very few reports on the usage of biological control agents. As seed treatment, fungicides such as carbendazim are frequently used to combat root rot; however, resistance to fungicides has arisen. However, breeding and transgenic approaches could be more efficient and sustainable long-term control strategies, especially if resistance to disease complexes may be identified. Yet, research in China is mainly limited to field investigation of root rot and disease resistance evaluation. In this review, we describe climatic conditions of pastoral regions and the role of alfalfa therein and challenges of root rot, the distribution of root rot in the world and China, and the impact of root rot pathogens on alfalfa in particular and spp., effects of environmental factors on root rot and summarize to date disease management approach.

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References
1.
Okubara P, Leston N, Micknass U, Kogel K, Imani J . Rapid Quantitative Assessment of Rhizoctonia Resistance in Roots of Selected Wheat and Barley Genotypes. Plant Dis. 2019; 100(3):640-644. DOI: 10.1094/PDIS-05-15-0611-SR. View

2.
Bartlett D, Clough J, Godwin J, Hall A, Hamer M . The strobilurin fungicides. Pest Manag Sci. 2002; 58(7):649-62. DOI: 10.1002/ps.520. View

3.
Badrhadad A, Nazarian-Firouzabadi F, Ismaili A . Fusion of a chitin-binding domain to an antibacterial peptide to enhance resistance to in tobacco (). 3 Biotech. 2018; 8(9):391. PMC: 6113175. DOI: 10.1007/s13205-018-1416-7. View

4.
Al-Jaradi A, Al-Mahmooli I, Janke R, Maharachchikumbura S, Al-Saady N, Al-Sadi A . Isolation and identification of pathogenic fungi and oomycetes associated with beans and cowpea root diseases in Oman. PeerJ. 2018; 6:e6064. PMC: 6295327. DOI: 10.7717/peerj.6064. View

5.
Khoury C, Bjorkman A, Dempewolf H, Ramirez-Villegas J, Guarino L, Jarvis A . Increasing homogeneity in global food supplies and the implications for food security. Proc Natl Acad Sci U S A. 2014; 111(11):4001-6. PMC: 3964121. DOI: 10.1073/pnas.1313490111. View