scholarly journals Investigation into the role of endogenous abscisic acid during ripening of imported avocado cv. Hass

2017 ◽  
Vol 97 (11) ◽  
pp. 3656-3664 ◽  
Author(s):  
Marjolaine D Meyer ◽  
Gemma A Chope ◽  
Leon A Terry
Keyword(s):  
Abscisic Acid ◽  
Endogenous Abscisic Acid

The Role of Endogenous Abscisic Acid in the Response of Plants to Stress

1973 ◽  
Vol 24 (4) ◽  
pp. 769-780 ◽  
Author(s):  
R. W. P. HIRON ◽  
S. T. C. WRIGHT
Keyword(s):  
Abscisic Acid ◽  
Endogenous Abscisic Acid

scholarly journals Role of Endogenous Abscisic Acid in Potato Microtuber Dormancy

1994 ◽  
Vol 105 (3) ◽  
pp. 891-896 ◽  
Author(s):  
J. C. Suttle ◽  
J. F. Hultstrand
Keyword(s):  
Abscisic Acid ◽  
Endogenous Abscisic Acid

Acquisition of desiccation tolerance by isolated maize embryos exposed to different conditions: the questionable role of endogenous abscisic acid

1994 ◽  
Vol 91 (4) ◽  
pp. 615-622 ◽  
Author(s):  
Adriana Bochicchio ◽  
Paolo Vernieri ◽  
Serenella Puliga ◽  
Francesca Balducci ◽  
Cuncetta Vazzana
Keyword(s):  
Abscisic Acid ◽  
Desiccation Tolerance ◽  
Endogenous Abscisic Acid ◽  
Maize Embryos

The Role of Endogenous Abscisic Acid in the Correlation Between the Cotyledon and Its Axillary Bud in PeaPisum sativum L

1978 ◽  
Vol 20 (4) ◽  
pp. 299-302 ◽  
Author(s):  
J. Šebánek ◽  
J. Hradilík
Keyword(s):  
Abscisic Acid ◽  
Axillary Bud ◽  
Endogenous Abscisic Acid

Acquisition of desiccation tolerance by isolated maize embryos exposed to different conditions: the questionable role of endogenous abscisic acid

1994 ◽  
Vol 91 (4) ◽  
pp. 615-622 ◽  
Author(s):  
Adriana Bochicchio ◽  
Paolo Vernieri ◽  
Serenella Puliga ◽  
Francesca Balducci ◽  
Concetta Vazzana
Keyword(s):  
Abscisic Acid ◽  
Desiccation Tolerance ◽  
Endogenous Abscisic Acid ◽  
Maize Embryos

scholarly journals Transcriptome Reveals Roles of Lignin-Modifying Enzymes and Abscisic Acid in the Symbiosis of Mycena and Gastrodia elata

2021 ◽  
Vol 22 (12) ◽  
pp. 6557
Author(s):  
Li-Ying Ren ◽  
Heng Zhao ◽  
Xiao-Ling Liu ◽  
Tong-Kai Zong ◽  
Min Qiao ◽  
...  
Keyword(s):  
Biological Activity ◽  
Abscisic Acid ◽  
Lignin Degradation ◽  
Molecular Mechanisms ◽  
Receptor Protein ◽  
Gastrodia Elata ◽  
Upregulated Genes ◽  
Aba Biosynthesis ◽  
Seed Coats

Gastrodia elata is a well-known medicinal and heterotrophic orchid. Its germination, limited by the impermeability of seed coat lignin and inhibition by abscisic acid (ABA), is triggered by symbiosis with fungi such as Mycena spp. However, the molecular mechanisms of lignin degradation by Mycena and ABA biosynthesis and signaling in G. elata remain unclear. In order to gain insights into these two processes, this study analyzed the transcriptomes of these organisms during their dynamic symbiosis. Among the 25 lignin-modifying enzyme genes in Mycena, two ligninolytic class II peroxidases and two laccases were significantly upregulated, most likely enabling Mycena hyphae to break through the lignin seed coats of G. elata. Genes related to reduced virulence and loss of pathogenicity in Mycena accounted for more than half of annotated genes, presumably contributing to symbiosis. After coculture, upregulated genes outnumbered downregulated genes in G. elata seeds, suggesting slightly increased biological activity, while Mycena hyphae had fewer upregulated than downregulated genes, indicating decreased biological activity. ABA biosynthesis in G. elata was reduced by the downregulated expression of 9-cis-epoxycarotenoid dioxygenase (NCED-2), and ABA signaling was blocked by the downregulated expression of a receptor protein (PYL12-like). This is the first report to describe the role of NCED-2 and PYL12-like in breaking G. elata seed dormancy by reducing the synthesis and blocking the signaling of the germination inhibitor ABA. This study provides a theoretical basis for screening germination fungi to identify effective symbionts and for reducing ABA inhibition of G. elata seed germination.

Inhibition of cambial activity in Abies balsamea by internal water stress: role of abscisic acid

1975 ◽  
Vol 53 (24) ◽  
pp. 3041-3050 ◽  
Author(s):  
C. H. A. Little
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Indoleacetic Acid ◽  
Stomatal Closure ◽  
Abies Balsamea ◽  
Cambial Activity ◽  
Inhibitory Effect ◽  
Internal Water ◽  
Endogenous Aba

In experiments with attached and detached shoots of balsam fir, Abies balsamea L., synthetic (±)abscisic acid (ABA) (1) reduced photosynthesis and transpiration by inducing stomatal closure, (2) inhibited indoleacetic acid (IAA) - induced cambial activity in photosynthesizing and non-photosynthesizing shoots, and (3) inhibited the basipetal movement of [14C]IAA. Neither gibberellic acid nor kinetin counteracted the inhibitory effect of (±)ABA on IAA-induced cambial activity. In addition it was demonstrated that increasing the internal water stress increased the level of endogenous ABA in the phloem–cambial region of bark peelings and decreased the basipetal movement of [14C]IAA through branch sections. On the basis of these findings it is proposed that internal water stress inhibits cambial activity, partly through increasing the level of ABA; the ABA acts to decrease the provision of carbohydrates and auxin that are required for cambial growth.

scholarly journals A Central Role of Abscisic Acid in Drought Stress Protection of Agrobacterium-Induced Tumors on Arabidopsis

2007 ◽  
Vol 145 (3) ◽  
pp. 853-862 ◽  
Author(s):  
Marina Efetova ◽  
Jürgen Zeier ◽  
Markus Riederer ◽  
Chil-Woo Lee ◽  
Nadja Stingl ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Drought Stress ◽  
Stress Protection ◽  
Induced Tumors
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