Surface sterilization for isolation of endophytes: Ensuring what (not) to grow

灭菌(经济) 分离(微生物学) 生物
作者
Pramod Kumar Sahu,Jyotsana Tilgam,Sushma Mishra,Saima Hamid,Amrita Gupta,Jayalakshmi K.,Satish K. Verma,Ravindra N. Kharwar
出处
期刊:Journal of Basic Microbiology [Wiley]
被引量:2
标识
DOI:10.1002/jobm.202100462
摘要

Endophytic microbiota opens a magnificent arena of metabolites that served as a potential source of medicines for treating a variety of ailments and having prospective uses in agriculture, food, cosmetics, and many more. There are umpteen reports of endophytes improving the growth and tolerance of plants. In addition, endophytes from lifesaving drug-producing plants such as Taxus, Nothapodytes, Catharanthus, and so forth have the ability to produce host mimicking compounds. To harness these benefits, it is imperative to isolate the true endophytes, not the surface microflora. The foremost step in endophyte isolation is the removal of epiphytic microbes from plant tissues, called as surface sterilization. The success of surface sterilization decides “what to grow” (the endophytes) and “what not to grow” (the epiphytes). It is very crucial to use an appropriate sterilant solution, concentration, and exposure time to ensure thorough surface disinfection with minimal damage to the endophytic diversity. Commonly used surface sterilants include sodium hypochlorite (2%–10%), ethanol (70%–90%), mercuric chloride (0.1%), formaldehyde (40%), and so forth. In addition, the efficiency could further be improved by pretreatment with surfactants such as Triton X-100, Tween 80, and Tween 20. This review comprehensively deals with the various sterilants and sterilization methods for the isolation of endophytic microbes. In addition, the mechanisms and rationale behind using specific surface sterilants have also been elaborated at length.
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