Global Changes in the Transcript and Metabolic Profiles during Symbiotic Nitrogen Fixation in Phosphorus-Stressed Common Bean Plants

Summary Inoculation of symbiotic N2-fixing rhizobacteria (rhizobia) in legumes is an alternative to reduce synthetic N fertiliser input to crops. Even though common bean benefits from the biological N2 fixation carried out by native rhizobia isolates, the low efficiency of this process highlights the importance of screening new strains for plant inoculation. Two rhizobial strains (SEMIA 4108 and SEMIA 4107) previously showed great potential to improve the growth of common beans under greenhouse conditions. Thus, this study evaluated the growth and grain yield of common bean plants inoculated with those strains in field experiments. The rhizobial identification was performed by 16S rRNA sequencing and the phylogeny showed that SEMIA 4108 and SEMIA 4107 are closely related to Rhizobium phaseoli, within a clade containing other 18 Rhizobium spp. type strains. Common bean plants inoculated with SEMIA 4107 showed similar productivity to N-fertilised (N+) plants in the first experiment (2016/17) and higher productivity in the second experiment (2018/19). The development of inoculated plants was different from that observed for N+. Nonetheless, comparing inoculated treatments with N-fertilised control, no yield or productivity losses at the end of the growing process were detected. Our results showed that inoculation of the rhizobial isolates SEMIA 4108 and SEMIA 4107 improved the growth and grain yield of common bean plants. The observed agronomical performance confirms that both strains were effective and can sustain common bean growth without nitrogen fertilisation under the edaphoclimatic conditions of this study.

Download Full-text

Selenium application influenced selenium biofortification and physiological traits in water-deficit common bean plants

Crop and Pasture Science ◽

10.1071/cp20519 ◽

2021 ◽

Author(s):

Ruby Antonieta Vega Ravello ◽

Cynthia de Oliveira ◽

Josimar Lessa ◽

Lissa Vasconcellos Vilas Boas ◽

Evaristo Mauro de Castro ◽

...

Keyword(s):

Common Bean ◽

Water Deficit ◽

Physiological Traits ◽

Bean Plants ◽

Common Bean Plants

Download Full-text

Application of Mycorrhizal Technology for Improving Yield Production of Common Bean Plants

International Journal of Applied Sciences and Biotechnology ◽

10.3126/ijasbt.v4i2.15103 ◽

2016 ◽

Vol 4 (2) ◽

pp. 191-197 ◽

Cited By ~ 7

Author(s):

Gamal M. Abdel-Fattah ◽

Wafaa M. Shukry ◽

Mahmoud M.B. Shokr ◽

Mai A. Ahmed

Keyword(s):

Common Bean ◽

Arbuscular Mycorrhizal ◽

Am Fungi ◽

Growth And Yield ◽

Mycorrhizal Dependency ◽

Npk Fertilizers ◽

Yield Production ◽

Bean Plants ◽

Mycorrhizal Plants ◽

Common Bean Plants

This study aimed to investigate the effects of arbuscular mycorrhizal (AM) fungi with different levels of NPK fertilizers on yield production of common bean plants which common bean plants were subjected to five levels of NPK fertilizers (0, 25, 50, 75, 100 %). Application of AMF significantly increased the growth and yield components of common beans with minimized the levels of NPK comparing to equivalents non-mycorrhizal ones. The results obtained revealed that inoculation with AMF and the concentrations 50% and 75% of NPK with AMF are the greater than other concentrations and non-mycorrhizal plants. Mycorrhizal Common bean plants had significantly higher number of pods, length of one pod, pods weight, 100 seeds weight, weight of seed/plant and intensity of mycorrhizal colonization(M%) . Concentrations of nutrients (N, P, K, Ca and Mg) and total carbohydrates, crude protein and mycorrhizal dependency of some yield parameters were significantly increased in mycorrhizal plants at different NPK levels when comparing to those of non-mycorrhizal plants paticularly at (50% and 75%) concentration of NPK, but lower Na concentration in mycorrhizal common bean seeds than those of non-mycorrhizal.Int J Appl Sci Biotechnol, Vol 4(2): 191-197

Download Full-text