Chinese milk vetch (Astragalus sinicus L.) is an important leguminous green manure that frequently suffers from seasonal drought. To improve its drought tolerance, the effects of rhizobia inoculation on tolerance and underlying physiological mechanism were investigated. Drought in combination with nitrogen assimilation, free amino acids, polyamines was investigated active nodules (AN), inactive...

Abstract Purpose The steady rise of atmospheric CO 2 concentrations enhances symbiotic N fixation and plant growth. However, it is largely unknown whether more P required to enhance under elevated . We examined if plants require support enhanced fixation. Methods White lupin ( Lupinus albus L. cv. Kiev) was grown in nutrient solution ambient (380 ppm) (700 levels at 0, 2, 5, 12, 25 50 µM P. Nod...

The experiment was carried out to investigate the effect of rhizobium inoculum and phosphorus fertilization on nodulation, growth, yield soyabean cv. Binasoybean-2 at area Chamberkella, East Subarnachar Upazila, Noakhali, Bangladesh, from mid-January first week May 2018. Four levels Rhizobium inoculation viz: 0, 25, 50 75 g kg-1 four 18, 36 54 kg P ha-1 were applied. laid in a randomized comple...

Selected flavonoids that are known as inducers and a suppressor of nodulation (nod) genes of the symbiotic bacterium Rhizobium leguminosarum bv. viciae were tested for their effect on symbiosis formation with garden pea as the host. A solid substrate was omitted from the hydroponic growing system in order to prevent losses of flavonoids due to adsorption and degradation. The presumed interactio...

BACKGROUND AND AIMS White lupin is highly adapted to growth in a low-P environment. The objective of the present study was to evaluate whether white lupin grown under P-stress has adaptations in nodulation and N2 fixation that facilitate continued functioning. METHODS Nodulated plants were grown in silica sand supplied with N-free nutrient solution containing 0 to 0.5 mm P. At 21 and 37 d aft...

Legumes form root nodules to gain fixed nitrogen from rhizobia and can also access in soil. Data suggest that plants might discriminate among these sources optimize growth, but recognition of symbiotically its regulation remain poorly understood. A greenhouse inoculation study manipulated the molecular concentration available using two Lotus japonicus genotypes nitrogen-fixing symbiont, Mesorhi...

Since their introduction at the beginning of 19th century, Casuarina species have become important components Algerian landscape, yet numbers present in Algeria and identity, distribution, symbiotic status are still not well understood. A survey conducted on 2,304 trees 96 stands across indicates that they represented exclusively by five species: cristata Miq., C. cunninghamiana equisetifolia L...

Morphogenesis of stem nodules in Sesbania rostrata was studied over a period of 6 days after inoculation with an appropriate species of Rhizobium. Nodulation sites were initially slightly raised, circular areas 0.3 to 0.6 mm in diameter and 4 to 5 mm apart in vertical rows along the length of the stem. Each site was underlaid by an adventitious root primordium. A site became susceptible to infe...