Fig. 10
From: Phosphorus and carbohydrate metabolism contributes to low phosphorus tolerance in cotton
The summary of the physiological mechanism of low P tolerance in cotton. Taken together, a low P tolerant cotton genotype has the characteristics of (1) higher dry matter/carbohydrate accumulation and development of a better root system to efficiently uptake P; (2) higher photosynthetic efficiency and carbohydrate metabolism for biomass production; (3) higher P utilization through P metabolizing enzymes; (4) higher genes expression related to P and carbohydrate metabolism to maintain normal growth; and (5) higher antioxidant enzymatic activities to reduce MDA content and improve low P tolerance