Leaf Gas Exchange of Tomato Depends on Abscisic Acid and Jasmonic Acid in Response to Neighboring Plants under Different Soil Nitrogen Regimes.

ABSTRACT: High planting density and nitrogen shortage are two important limiting factors for crop yield. Phytohormones, abscisic acid (ABA), and jasmonic acid (JA), play important roles in plant growth. A pot experiment was conducted to reveal the role of ABA and JA in regulating leaf gas exchange and growth in response to the neighborhood of plants under different nitrogen regimes. The experiment included two factors: two planting densities per pot (a single plant or four competing plants) and two N application levels per pot (1 and 15 mmol·L^-1). Compared to when a single plant was grown per pot, neighboring competition decreased stomatal conductance (g_s), transpiration (T_r) and net photosynthesis (P_n). Shoot ABA and JA and the shoot-to-root ratio increas

SUBMITTER: Li S 

PROVIDER: S-EPMC7759899 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature