Effect of water stress on nitrogen fixation and nodule structure of common bean

By M. L. G. Ramos, R. Parsons, J. Sprent, E. James. 2003

93 citations recorded by the source corpus.

Abstract – The aim of this work was to investigate the effect of water stress on N 2 fixation and nodulestructure of two common bean ( Phaseolus vulgaris L.) cultivars Carioca and EMGOPA-201. Plantswere harvested after five and eight days of water stress. Carioca had lower nodule dry weight on bothwater stress periods; shoot dry weight was lower at five days water stress and did not differ fromcontrol after eight days stress. Both cultivars had lower nitrogenase activity than control after five andeight days water stress. For both cultivars, after eight days stress bacteroid membranes were damaged.Carioca presented more pronounced damage to infected tissue, with host cell vacuolation and loss of theperibacteroid membrane at five days after stress; at eight days after stress, there was degradation ofcytoplasm host cells and senescence of bacteroids, with their release into intercellular spaces. Intensityof immunogold-labeling of intercellular cortical glycoprotein with the monoclonal antibodies MAC 236/265 was different for both cultivars.Index terms:

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/a736578268bccffecaadcc1ab1624be4f6bea798

How researchers see this paper

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In Plant Science

1. H. D. Upadhyaya
2. S. Dwivedi
3. G. Kaschuk
4. Lixin Wang
5. S. Daryanto
6. P. Jacinthe
7. Rodomiro Ortiz
8. M. Hungria

Citations in the corpus

• Advances in Host Plant and Rhizobium Genomics to Enhance Symbiotic Nitrogen Fixation in Grain Legumes (2015, background): “Differences in the symbiotic performance under environmental stresses may also vary with the host and the bacterium (Roughley et al., 1981; Ramos et al., 2003; Shiro et al., 2012; Hungria and Kaschuk, 2014) and thus there is a need to follow a holistic approach.”
• Alleviation of drought stress in the common bean (Phaseolus vulgaris L.) by co-inoculation with Paenibacillus polymyxa and Rhizobium tropici (2008, result): “Similar observations have been reported for P. vulgaris (Ramos et al., 2003), Vigna unguiculata (Figueiredo et al., 2001), Clitoria ternatea (Diniz et al., 2002), and Glycine max (Serraj et al., 1999).”
• Global synthesis of drought effects on cereal, legume, tuber and root crops production: A review (2017, background): “Similar practice might also improve the yield of common bean as nitrogen (N2) fixation of the species was particularly sensitive to high soil temperature (Piha and Munns, 1987) and water stress (Ramos et al., 2003).”