Role of Lectins in Plant-Microorganism Interactions: III. Influence of Rhizosphere/Rhizoplane Culture Conditions on the Soybean Lectin-binding Properties of Rhizobia.
نویسندگان
چکیده
The influence of rhizosphere/rhizoplane culture conditions on the ability of various rhizobia to bind soybean seed lectin (SBL) was examined. Eleven strains of the soybean symbiont, Rhizobium japonicum, and six strains of various heterologous Rhizobium species were cultured in root exudate of soybean (Glycine max [L.] Merr.) and in association with roots of soybean seedlings which were growing either hydroponically or in montmorillonite clay soil amendment (Turface). All 11 of the R. japonicum strains developed biochemically specific receptors for the lectin when cultured under these conditions, whereas six of the 11 did not develop such receptors when cultured in synthetic salts medium. Two cowpea strains also developed receptors for SBL. The other four heterologous strains of rhizobia gave no evidence of biochemically specific SBL binding in either synthetic salts media or rhizosphere/rhizoplane cultures. These results demonstrate that the environment provided by plant roots is an important factor in the development of specific lectin receptors on the cell surface of R. japonicum.
منابع مشابه
Role of lectins in plant-microorganism interactions: I. Binding of soybean lectin to rhizobia.
Highly purified soybean lectin (SBL) was labeled with fluorescein isothiocyanate (FITC-SBL) or tritium ((3)H-SBL) and repurified by affinity chromatography. FITC-SBL was found to bind to living cells of 15 of the 22 Rhizobium japonicum strains tested. The lectin did not bind to cells of the other seven R. japonicum strains, or to cells of any of the nine Rhizobium strains tested which do not no...
متن کاملInfluence of Elevated Atmospheric Carbon Dioxide on Transcriptional Responses of Bradyrhizobium japonicum in the Soybean Rhizoplane
Elevated atmospheric CO2 can influence the structure and function of rhizoplane and rhizosphere microorganisms by altering root growth and the quality and quantity of compounds released into the rhizoplane and rhizosphere via root exudation. In these studies we investigated the transcriptional responses of Bradyrhizobium japonicum cells growing in the rhizoplane of soybean plants exposed to ele...
متن کاملRole of Lectins in Plant - Microorganism Interactions
The influence of rhizosphere/rhizoplane culture conditions on the ability of various rhizobia to bind soybean seed lectin (SBL) was examined. Eleven strains of the soybean symbiont, Rhizobium japonicun4 and six strains of various heterologous Rhizobium species were cultured in root exudate of soybean ( Glycine max IL.I Merr.) and in association with roots of soybean seedlings which were growing...
متن کاملHuanglongbing impairs the rhizosphere-to-rhizoplane enrichment process of the citrus root-associated microbiome
BACKGROUND Roots are the primary site for plant-microbe interactions. Among the three root-associated layers (i.e., rhizosphere, rhizoplane, and endorhiza), the rhizoplane is a key component serving a critical gating role that controls microbial entry into plant roots. The microbial communities colonizing the three layers are believed to be gradually enriched from the bulk soil inoculum. Howeve...
متن کاملInteractions between Rhizobia and Lectins of Lentil, Pea, Broad Bean, and Jackbean.
A quantitative method was developed to measure the binding of fluorescent-labeled lentil (Lens esculenta Moench), pea (Pisum sativum L.), broad bean (Vicia faba L.), and jackbean (Canavalia ensiformis L., DC.) lectins to various Rhizobium strains. Lentil lectin bound to three of the five Rhizobium leguminosarum strains tested. The number of lentil lectin molecules bound per R. leguminosarum 128...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Plant physiology
دوره 62 1 شماره
صفحات -
تاریخ انتشار 1978