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You searched for: Journal name Plant physiology Remove constraint Journal name: Plant physiology Subject term Triticum aestivum Remove constraint Subject term: Triticum aestivum Subject term Nicotiana tabacum Remove constraint Subject term: Nicotiana tabacum Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
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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. Cytokinins in tobacco and wheat chloroplasts. Occurrence and change due to light/dark treatment

Author:
Benkova, E.; Witters, E.; Dongen, W. van.; Kolar, J.; Motyka, V.; Brzobohaty, B.; Onckelen, H.A. van.; Machackova, I.
Source:
Plant physiology 1999 v.121 no.1 pp. 245-251
ISSN:
0032-0889
Subject:
Nicotiana tabacum; Triticum aestivum; chloroplasts; light; photoperiod; chemical composition; quantitative analysis; leaves; metabolism; enzyme activity; cytokinins; oxidoreductases
Abstract:
... Although cytokinins (CKs) affect a number of processes connected with chloroplasts, it has never been rigorously proven that chloroplasts contain CKs. We isolated intact chloroplasts from tobacco (Nicotiana tabacum L. cvSR1) and wheat (Triticum aestivum L. cv Ritmo) leaves and determined their CKs by liquid chromatography/tandem mass spectroscopy. Chloroplasts from both species contained a whole s ...