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The Arabidopsis cytochrome P450 CYP707A encodes ABA 8′‐hydroxylases: key enzymes in ABA catabolism
TLDR
Results demonstrate that CYP707A family genes play a major regulatory role in controlling the level of ABA in plants.
Arabidopsis CYP707As Encode (+)-Abscisic Acid 8′-Hydroxylase, a Key Enzyme in the Oxidative Catabolism of Abscisic Acid1
TLDR
It is established that the CYP707A family plays a key role in regulating the ABA level through the 8′-hydroxylation of (+)-ABA.
CYP707A1 and CYP707A2, Which Encode Abscisic Acid 8′-Hydroxylases, Are Indispensable for Proper Control of Seed Dormancy and Germination in Arabidopsis1
TLDR
It is shown that the cyp707a1 mutant accumulated ABA to higher levels in dry seeds than the cyP707a2 mutant, and each CYP707A gene plays a distinct role during seed development and postgermination growth.
A Plant Growth Retardant, Uniconazole, Is a Potent Inhibitor of ABA Catabolism in Arabidopsis
TLDR
Uniconazole-P effectively inhibits ABA catabolism in Arabidopsis plants and shows enhanced drought tolerance, and the structure-activity relationship of the azole-type compounds on ABA 8′-hydroxylase inhibitory activity is discussed.
Abscisic acid in the thermoinhibition of lettuce seed germination and enhancement of its catabolism by gibberellin.
TLDR
It is concluded that ABA is an important factor in the regulation of thermoinhibition of lettuce seed germination, and that GA affects the temperature responsiveness of the seeds through ABA metabolism.
A PIP-family protein is required for biosynthesis of tobacco alkaloids
TLDR
It is proposed that the tobacco A622-like reductases of the PIP family are involved in either the formation of a nicotinic acid-derived precursor or the final condensation reaction of tobacco alkaloids.
Changes in the Content and Biosynthesis of Phytoalexins in Banana Fruit
TLDR
Changes in the phytoalexin content in unripe fruit of banana, Musa acuminata, were analyzed after various treatments and revealed that 2-(4′-hydroxyphenyl)-1,8-naphthalic anhydride was biosynthesized from hydroxyanigorufone rather than from irenolone.
Abscisic acid-dependent algal morphogenesis in the unicellular green alga Haematococcus pluvialis
TLDR
Exogenous active oxygen species generated under drought stress were involved in all algal events, including ABA biosynthesis, encystment, and enhanced carotenogenesis, indicating that ABA, induced by oxidative stress, could function as a stress hormone in algal morphogenesis in H. pluvialis under drought Stress.
Biosynthesis of Abscisic Acid by the Non-mevalonate Pathway in Plants, and by the Mevalonate Pathway in Fungi
TLDR
13C-Labeled β-carotene from the tulip tree showed that the positions of the labeled carbons were the same as those of ABA, being consistent with the biosynthesis of A BA via carotenoids.
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