Root rot a silent alfalfa killer in China: Distribution, fungal, and oomycete pathogens, impact of climatic factors and its management
文献类型： 外文期刊
作者： Abbas, Aqleem 1 ; Mubeen, Mustansar 3 ; Sohail, Muhammad Aamir 4 ; Solanki, Manoj Kumar 5 ; Hussain, Babar 6 ; Nosheen, Shaista 7 ; Kashyap, Brijendra Kumar 8 ; Zhou, Lei 1 ; Fang, Xiangling 2 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Agroprod Safety & Nutr, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou, Peoples R China
2.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Key Lab Grassland Livestock Ind Innovat, Lanzhou, Peoples R China
3.Univ Sargodha, Coll Agr, Dept Plant Pathol, Sargodha, Pakistan
4.Huazhong Agr Univ, Coll Plant Sci & Technol, Wuhan, Peoples R China
5.Univ Siles Katowice, Inst Biol Biotechnol & Environmental Protect, Fac Nat Sci, Plant Cytogenet & Mol Biol Grp, Katowice, Poland
6.Karakoram Int Univ, Dept Plant Sci, Gilgit, Pakistan
7.Shandong Univ Technol, Colin Ratledge Ctr Microbial Lipids, Sch Agr Engn & Food Sci, Zibo, Peoples R China
8.Bundelkhand Univ, Inst Engn & Technol, Dept Biotechnol Engn, Jhansi, India
关键词： alfalfa; root rot; China; distribution; climatic factors; management
期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：6.064； 五年影响因子：6.843 ）
ISSN：
年卷期： 2022 年 13 卷
页码：
收录情况： SCI
摘要： 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 Fusarium spp. and Rhizoctonia solani 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 R. solani and Fusarium spp., effects of environmental factors on root rot and summarize to date disease management approach.
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