首页> 外文会议>International Nitrogen Fixation Congress >ROLE OF RHIZOBIAL ENDOPHYTES AS NITROGEN FIXER IN PROMOTING PLANT GROWTH AND PRODUCTIVITY OF INDIAN CULTIVATED UPLAND RICE (ORYZA SATIVA L.) PLANTS
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ROLE OF RHIZOBIAL ENDOPHYTES AS NITROGEN FIXER IN PROMOTING PLANT GROWTH AND PRODUCTIVITY OF INDIAN CULTIVATED UPLAND RICE (ORYZA SATIVA L.) PLANTS

机译:Rhizobial Endophytes作为氮固定剂在促进植物生长和印度栽培旱稻生产率方面的作用(Oryza sativa L.)植物

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Rhizobia are bonafide member of symbiotic N2-fixing microorganisms. They can exclusively induce root or stem nodules on leguminous hosts. Recently it has been explored that rhizobia can make an intimate association with non-legumes such as rice, wheat, maize, etc as endophyte, without forming any nodule like structure or causing any disease symptoms (Yanni et al. 1997; Chaintreuil et al., 2000; Gutierrez-Zamora and Martinez-Romero 2001; Tan et al 2001). The infection process of rhizobia to rice is nod gene independent, non-specific and does not involve the formation of infection threads which is a characteristic feature of legume-rhizobia symbiosis. Although rhizobial colonization extend from rhizosphere to inner into the epidermis, endodermis and cortex, but the main site of colonization is intercellular spaces of rice root (Reddy et al 1997). Rhizobial interaction with rice may be manifested a full spectrum of growth responses. Rhizobia may promote, inhibit or have no effect on rice plant growth(Yanni et al, 2001, Prayitno et al., 1999; Perrine et al., 2001 Biswas et al 2000). In this study, we have reported the isolation of rhizobial endophytes from rice roots of cultivated upland Indian rice plant and their ability to fix nitrogen in association with the rice as host.
机译:Rhizobia是Symbiotic N2固定微生物的Bonafide成员。它们可以专门诱导豆科宿主上的根或茎结节。最近,已经探讨了根扎比亚可以与稻米,小麦,玉米等非豆类的贴心关系,因为没有形成结构或造成任何疾病症状的任何结节(yanni等,1997; chaintreuil等人。 ,2000; Gutierrez-Zamora和Martinez-Romero 2001; Tan等人2001)。根瘤菌对稻米的感染过程是Nod基因独立,非特异性,并且不涉及形成感染螺纹,这是豆类根瘤菌共生的特征。虽然根茎殖民地从根圈延伸到内部进入表皮,内胚层和皮质,但定植的主要部位是稻根的间细胞间隙(Reddy等,1997)。与水稻的根瘤菌相互作用可能表现出全谱的生长反应。根扎比亚可能促进,抑制或对水稻植物生长没有影响(Yanni等,2001,Genditno等,1999; Perrine等,2001 Biswas等,2000)。在这项研究中,我们报道了从耕种印度水稻植物的水稻根系根系中的根瘤菌内心细胞的分离及其在宿主中与水稻结合固定氮的能力。

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