Hassan Saad El-Din
Botany and Microbiology Department, Faculty of Science, AL-Azhar University, Nasr City, Cairo 11884, Egypt.
J Adv Res. 2017 Nov;8(6):687-695. doi: 10.1016/j.jare.2017.09.001. Epub 2017 Sep 11.
Bacterial and fungal endophytes are widespread inhabitants inside plant tissues and have been shown to assist plant growth and health. However, little is known about plant growth-promoting endophytes (PGPE) of medicinal plants. Therefore, the aims of this study were to identify bacterial and fungal endophytes of and to characterize plant growth-promoting (PGP) properties of these endophytes. Seven bacterial endophytes were isolated and identified as and , where five endophytic fungi were obtained and assigned to and . The isolated endophytes differentially produced indole acetic acid (IAA) and ammonia, and in addition to their enzymatic and antimicrobial activities, they exhibited variable capacity for phosphate solubilization. In order to investigate the effect of endophytes on plant growth, four representative endophytes and their consortiums were selected concerning to their potential ability to promote plant growth. The results indicated that microbial endophytes isolated from medicinal plants possessing a vital role to improve plant growth and could be used as inoculants to establish a sustainable crop production system.
细菌和真菌内生菌是植物组织内广泛存在的寄居微生物，已被证明有助于植物生长和健康。然而，关于药用植物促生长内生菌（PGPE）的了解却很少。因此，本研究的目的是鉴定[具体植物名称未给出]的细菌和真菌内生菌，并表征这些内生菌的促生长（PGP）特性。分离出7种细菌内生菌，鉴定为[具体细菌种类未给出]和[具体细菌种类未给出]，同时获得了5种内生真菌，并归类为[具体真菌种类未给出]和[具体真菌种类未给出]。分离出的内生菌能不同程度地产生吲哚乙酸（IAA）和氨，除了具有酶活性和抗菌活性外，它们还表现出不同的解磷能力。为了研究内生菌对植物生长的影响，根据其促进植物生长的潜在能力，选择了4种有代表性的内生菌及其组合。结果表明，从药用植物中分离出的微生物内生菌在促进植物生长方面具有重要作用，可作为接种剂用于建立可持续的作物生产系统。
