Journal of Plant Biochemistry & Physiology
Open Access
ISSN: 2329-9029
+44 1478 350008
ISSN: 2329-9029
+44 1478 350008
Ratnayaka HH
New Orleans, LA 70125
Tanzania
Research Article
Photosynthesis and Kaempferol Yields of Soy Leaves Under ABA Application and Mechanical Wounding
Author(s): Ratnayaka HH, Boue S, Dinh T, Le SB and Cherubin RRatnayaka HH, Boue S, Dinh T, Le SB and Cherubin R
Environmentally sound plant treatments that can impose mild physiological stress and elicit bioaccumulation of useful phytochemicals such as kaempferols are limited. We tested ABA foliar application, 100 or 200 μM, and two types of leaf wounding, piercing or hole punching in young greenhouse-grown soy plants. Leaf gas exchange and A/Ci response, ΦPSII, pigments and antiradical activity were measured using the same leaf and kaempferols were measured in the leaf above. ABA 200 μM-treated plants had ≥ 20% less gas exchange and 17% less ETR, but greater Vcmax and Jmax compared to control. They had 55% and 100% more stomatal limitation to Pnet and ΦPSII, respectively, than control. Leaf-wounded plants showed the lowest stomatal limitation to either Pnet or ΦPSII. Leaf piercing increased chl.. View More»
DOI:
10.4172/2329-9029.1000215