BIODIVERSITY OF NITROGEN FIXING INDIGENOUS RHIZOBIA NODULATING COMMON BEAN (PHASEOLUS VULGARIS L.), COWPEA (VIGNA UNGUICULATA (L.) WALP.), SOYBEAN (GLYCINE MAX L. MERRY), AND OTHERS PULSES ISOLATED FROM SUB-SAHARAN AFRICA SOILS. A REVIEW

2019 ◽  
Vol 22 (4) ◽  
Author(s):  
Andre L. Bongo ◽  
◽  
Stanisław J. Pietr ◽  
Keyword(s):  
Glycine Max ◽  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Vigna Unguiculata ◽  
Sub Saharan Africa ◽  
Nitrogen Fixing ◽  
Phaseolus Vulgaris L ◽  
Glycine Max L ◽  
Sub Saharan

scholarly journals Development of Common Bean (Phaseolus Vulgaris L.) Production Under Low Soil Phosphorus and Drought in Sub-Saharan Africa: A Review

2014 ◽  
Vol 7 (5) ◽  
Author(s):  
Margaret Namugwanya ◽  
John Stephen Tenywa ◽  
Erasmus Otabbong ◽  
Drake N. Mubiru ◽  
Twaha Ali Masamba
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Soil Phosphorus ◽  
Sub Saharan Africa ◽  
Phaseolus Vulgaris L ◽  
Sub Saharan

scholarly journals Short Term Elevated CO2 Interacts with Iron Deficiency, Further Repressing Growth, Photosynthesis and Mineral Accumulation in Soybean (Glycine max L.) and Common Bean (Phaseolus vulgaris L.)

Environments ◽  
2021 ◽  
Vol 8 (11) ◽  
pp. 122
Author(s):  
Teresa Deuchande ◽  
José Soares ◽  
Fábio Nunes ◽  
Elisabete Pinto ◽  
Marta W. Vasconcelos
Keyword(s):  
Glycine Max ◽  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Elevated Co2 ◽  
Interactive Effect ◽  
Arable Land ◽  
Fe Deficiency ◽  
Phaseolus Vulgaris L ◽  
Physiological Level ◽  
Glycine Max L

Elevated CO2 (eCO2) has been reported to cause mineral losses in several important food crops such as soybean (Glycine max L.) and common bean (Phaseolus vulgaris L.). In addition, more than 30% of the world’s arable land is calcareous, leading to iron (Fe) deficiency chlorosis and lower Fe levels in plant tissues. We hypothesize that there will be combinatorial effects of eCO2 and Fe deficiency on the mineral dynamics of these crops at a morphological, biochemical and physiological level. To test this hypothesis, plants were grown hydroponically under Fe sufficiency (20 μM Fe-EDDHA) or deficiency (0 μM Fe-EDDHA) at ambient CO2 (aCO2, 400 ppm) or eCO2 (800 ppm). Plants of both species exposed to eCO2 and Fe deficiency showed the lowest biomass accumulation and the lowest root: shoot ratio. Soybean at eCO2 had significantly higher chlorophyll levels (81%, p < 0.0001) and common bean had significantly higher photosynthetic rates (60%, p < 0.05) but only under Fe sufficiency. In addition, eCO2 increased ferric chelate reductase acivity (FCR) in Fe-sufficient soybean by 4-fold (p < 0.1) and in Fe-deficient common bean plants by 10-fold (p < 0.0001). In common bean, an interactive effect of both environmental factors was observed, resulting in the lowest root Fe levels. The lowering of Fe accumulation in both crops under eCO2 may be linked to the low root citrate accumulation in these plants when grown with unrestricted Fe supply. No changes were observed for malate in soybean, but in common bean, shoot levels were significantly lower under Fe deficiency (77%, p < 0.05) and Fe sufficiency (98%, p < 0.001). These results suggest that the mechanisms involved in reduced Fe accumulation caused by eCO2 and Fe deficiency may not be independent, and an interaction of these factors may lead to further reduced Fe levels.

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