Gas exchange characteristics and dry matter accumulation of soybean treated with Nod factors.
The effect of Nod factors on gas exchange characteristics and growth of soybean plants was studied. Soybean responded positively to some concentrations of Nod factors. Photosynthesis was increased up to 13% over the control, and this was accompanied by increases in stomatal conductance; plant dry weight was also increased. Near-fully expanded leaves responded more strongly to Nod factors than fully expanded leaves. Only Nod factor NodBj-V (C18:1, MeFuc) had significant effects on soybean. The finding suggests that Nod factors can affect photosynthesis, possibly indirectly, by stimulating sink strength.
Jose Almaraz
Juan
J
Department of Plant Science, Macdonald Campus, McGill University, 21111 Lakeshore Road, Ste Anne de Bellevue, Que., Canada H9X 3V9.
Zhou
Xiaomin
X
Souleimanov
Alfred
A
Smith
Donald
D
D004305:Dose-Response Relationship, Drug; D005740:Gases / Q000378:metabolism*; D008070:Lipopolysaccharides / Q000494:pharmacology*; D010788:Photosynthesis / Q000187:drug effects; D018526:Plant Transpiration / Q000187:drug effects*; D013025:Glycine max / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism*; D013997:Time Factors
D005740:Gases; D008070:Lipopolysaccharides; C091898:Nod factor IV, Bradyrhizobium japonicum