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You searched for: Subject enzyme activity Remove constraint Subject: enzyme activity Subject term Brassica napus Remove constraint Subject term: Brassica napus Subject term Helianthus annuus Remove constraint Subject term: Helianthus annuus
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1. Importance of the chiral centers of jasmonic acid in the responses of plants. Activities and antagonism between natural and synthetic analogs

Author:
Holbrook, L.; Tung, P.; Ward, K.; Reid, D.M.; Abrams, S.; Lamb, N.; Quail, J.W.; Moloney, M.M.
Source:
Plant physiology 1997 v.114 no.2 pp. 419-428
ISSN:
0032-0889
Subject:
Helianthus annuus; Brassica napus; measurement; chemical degradation; dose response; jasmonic acid; gene expression; Triticum aestivum; Nicotiana tabacum; esters; stereochemistry; enzyme activity; chemical structure; seed germination; transgenic plants; cotyledons; proteinase inhibitors; reporter genes; chemical constituents of plants; chlorophyll; beta-glucuronidase
Abstract:
... The importance of the two chiral centers at C-3 and C-7 in the molecular structure of jasmonic acid in plant responses was investigated. We separated methyl jasmonate (MeJA) into (3R)- and (3S)-isomers with a fixed stereochemistry at C-3, but epimerization at C-7 is possible. The four isomers of the nonepimerizable analog 7-methyl MeJA were synthesized. These six esters and their corresponding aci ...

2. Diverse effects of arsenic on selected enzyme activities in soil–plant–microbe interactions

Author:
Yelena V. Lyubun; Ekaterina V. Pleshakova; Martin Mkandawire; Olga V. Turkovskaya
Source:
Journal of hazardous materials 2013 v.262 pp. 685-690
ISSN:
0304-3894
Subject:
Brassica napus; Helianthus annuus; Lolium; Sorghum bicolor subsp. drummondii; arsenic; correlation; enzyme activity; field crops; nutrient uptake; peroxidase; phytoremediation; plant growth; pollutants; polluted soils; prediction; soil enzymes; soil quality
Abstract:
... Under the influence of pollutants, enzyme activities in plant–microbe–soil systems undergo changes of great importance in predicting soil–plant–microbe interactions, regulation of metal and nutrient uptake, and, ultimately, improvement of soil health and fertility. We evaluated the influence of As on soil enzyme activities and the effectiveness of five field crops for As phytoextraction. The initi ...
DOI:
10.1016/j.jhazmat.2013.09.045