Respiratory stimulus in Rhizobium sp. by legume lectins

The interaction ofVatairea macrocarcaandRhizobium tropici: net H+efflux stimulus and alteration of extracellular Na+concentration

“…Similar H + activity was observed for treatments with Gal and BSA. The O 2 demand increase model in CIAT899, under VML, BSA and Gal treatments [13], appeared to be synchronized with the H + activity model presented here. In this context, when considering phases 2 and 3 of this model, an estimation of net H + efflux in the bacterial suspensions may be obtained.…”

“…Considering the approximations presented above and the results in the induced O 2 demand by VML [13], it can be concluded that there is evidence that VML is, in part, a substrate molecule for Rhizobium. Furthermore, if the lectin represents a special function to activate and to select a specific Rhizobium , it could become much more competitive in the symbiotic process than other non‐specific Rhizobium strains.…”

“…On the other hand, the ConA lectin (Man/Glc specific) has been shown to stimulate O 2 demand in B. cereus [12]. The lectins from the leguminous plants, mainly VML, have also shown to stimulate respiration in R. tropici and R. etli [13].…”

How to Increase the Productivity of the Soybean-Rhizobial Symbiosis

“…It was also found that lectins from the seeds of leguminous plants that have a high molecular weight (> 100 000 Da) can stimulate the respiration of some Rhizobium. According to the authors [53], this effect is induced by the lectins, and significantly increases the interaction of lectin-Rhizobium due to the physiological properties of the bacteria.…”

Role of phytolectin in the life cycle of plants

“…It was shown that the soybean lectin may provide the biofilm formation by nodule bacteria B. japonicum [87]. At the same time the treatment of nodule bacteria with plant agglutinating proteins has considerable impact on the processes related to the respiration of microorganisms [88] and the synthesis of exoglycans [85]. One of the ways of the influence of legume lectins on the formation of plant-microbe symbiotic interrelations may be the change in the activity of the nodule formation by rhizobia and the reduction of atmospheric nitrogen by the symbiotic system 'leguminous plant-nodule bacteria' [89,90].…”