scholarly journals Starch degradation, abscisic acid and vesicular trafficking are important elements in callose priming by indole-3-carboxylic acid in response to Plectosphaerella cucumerina infection

2018 ◽  
Vol 96 (3) ◽  
pp. 518-531 ◽  
Author(s):  
Jordi Gamir ◽  
Victoria Pastor ◽  
Paloma Sánchez-Bel ◽  
Blas Agut ◽  
Diego Mateu ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Carboxylic Acid ◽  
Vesicular Trafficking ◽  
Starch Degradation ◽  
Plectosphaerella Cucumerina

Comparative analysis of abscisic acid content and starch degradation during storage of tubers harvested from different potato varieties

2000 ◽  
Vol 43 (4) ◽  
pp. 371-382 ◽  
Author(s):  
Sophia Biemelt ◽  
Mohammad Hajirezaei ◽  
Eike Hentschel ◽  
Uwe Sonnewald
Keyword(s):  
Abscisic Acid ◽  
Comparative Analysis ◽  
Acid Content ◽  
Starch Degradation ◽  
Potato Varieties ◽  
Abscisic Acid Content

Identification of indole-3-carboxylic acid as mediator of priming against Plectosphaerella cucumerina

2012 ◽  
Vol 61 ◽  
pp. 169-179 ◽  
Author(s):  
J. Gamir ◽  
V. Pastor ◽  
M. Cerezo ◽  
V. Flors
Keyword(s):  
Carboxylic Acid ◽  
Plectosphaerella Cucumerina

scholarly journals Drought Intensity-Responsive Salicylic Acid and Abscisic Acid Crosstalk with the Sugar Signaling and Metabolic Pathway in Brassica napus

Plants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 610
Author(s):  
Sang-Hyun Park ◽  
Bok-Rye Lee ◽  
Van Hien La ◽  
Md Al Mamun ◽  
Dong-Won Bae ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Abscisic Acid ◽  
Soluble Sugar ◽  
Early Period ◽  
Phloem Loading ◽  
Starch Degradation ◽  
Late Period ◽  
Sugar Signaling ◽  
Drought Period ◽  
Drought Intensity

The aim of this study was to characterize hormonal crosstalk with the sugar signaling and metabolic pathway based on a time course analysis of drought intensity. Drought intensity-responsive changes in the assimilation of newly fixed carbon (C) into soluble sugar, the content of sugar and starch, and expression of genes involved in carbohydrate metabolism were interpreted as being linked to endogenous abscisic acid (ABA) and salicylic acid (SA) levels and their signaling genes. The ABA and SA levels in the drought-stressed leaves increased together during the early drought period (days 0–6), and additional ABA accumulation occurred with depressed SA during the late period (days 6–14). Although drought treatment decreased the assimilation of newly fixed C into soluble sugar, representing a 59.9%, 33.1%, and 62.9% reduction in 13C-glucose, 13C-fructose, and 13C-sucrose on day 14, respectively, the drought-responsive accumulation of soluble sugars was significant. During the early period, the drought-responsive accumulation of hexose and sucrose was concurrent with the upregulated expression of hexokinase 1 (HXK1), which, in turn, occurred parallel to the upregulation of ABA synthesis gene 9-sis-epoxycarotenoid dioxygenase (NCED3) and SA-related genes (isochorismate synthase 1 (ICS1) and non-expressor of pathogenesis-related gene (NPR1)). During the late period, hexose accumulation, sucrose phloem loading, and starch degradation were dominant, with a highly enhanced expression of the starch degradation-related genes β-amylase 1 (BAM1) and α-amylase 3 (AMY3), which were concomitant with the parallel enhancement of sucrose non-fermenting−1 (Snf1)-related protein kinase 2 (SnRK2).2 and ABA-responsive element binding 2 (AREB2) expression in an ABA-dependent manner. These results indicate that the drought-responsive accumulation of sugars (especially SA-mediated sucrose accumulation) is part of the acclamatory process during the early period. Conversely, ABA-responsive hexose accumulation and sucrose phloem loading represent severe drought symptoms during the late drought period.

scholarly journals Comparison of 1-Aminocyclopropane-1-carboxylic Acid, Abscisic Acid and Anthocyanin Content of Some Apple Cultivars during Fruit Growth and Maturation.

1991 ◽  
Vol 60 (3) ◽  
pp. 505-511 ◽  
Author(s):  
Satoru Kondo ◽  
Jamnong Uthaibutra ◽  
Hiroshi Gemma
Keyword(s):  
Abscisic Acid ◽  
Carboxylic Acid ◽  
Fruit Growth ◽  
Anthocyanin Content ◽  
Apple Cultivars

scholarly journals ERF Transcription Factor OsBIERF3 Positively Contributes to Immunity against Fungal and Bacterial Diseases but Negatively Regulates Cold Tolerance in Rice

2022 ◽  
Vol 23 (2) ◽  
pp. 606
Author(s):  
Yongbo Hong ◽  
Hui Wang ◽  
Yizhou Gao ◽  
Yan Bi ◽  
Xiaohui Xiong ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Abscisic Acid ◽  
Abiotic Stress ◽  
Carboxylic Acid ◽  
Cold Stress ◽  
Stress Tolerance ◽  
Cold Tolerance ◽  
Transcriptional Activation ◽  
Altered Expression ◽  
Erf Transcription Factor

We previously showed that overexpression of the rice ERF transcription factor gene OsBIERF3 in tobacco increased resistance against different pathogens. Here, we report the function of OsBIERF3 in rice immunity and abiotic stress tolerance. Expression of OsBIERF3 was induced by Xanthomonas oryzae pv. oryzae, hormones (e.g., salicylic acid, methyl jasmonate, 1-aminocyclopropane-1-carboxylic acid, and abscisic acid), and abiotic stress (e.g., drought, salt and cold stress). OsBIERF3 has transcriptional activation activity that depends on its C-terminal region. The OsBIERF3-overexpressing (OsBIERF3-OE) plants exhibited increased resistance while OsBIERF3-suppressed (OsBIERF3-Ri) plants displayed decreased resistance to Magnaporthe oryzae and X. oryzae pv. oryzae. A set of genes including those for PRs and MAPK kinases were up-regulated in OsBIERF3-OE plants. Cell wall biosynthetic enzyme genes were up-regulated in OsBIERF3-OE plants but down-regulated in OsBIERF3-Ri plants; accordingly, cell walls became thicker in OsBIERF3-OE plants but thinner in OsBIERF3-Ri plants than WT plants. The OsBIERF3-OE plants attenuated while OsBIERF3-Ri plants enhanced cold tolerance, accompanied by altered expression of cold-responsive genes and proline accumulation. Exogenous abscisic acid and 1-aminocyclopropane-1-carboxylic acid, a precursor of ethylene biosynthesis, restored the attenuated cold tolerance in OsBIERF3-OE plants while exogenous AgNO3, an inhibitor of ethylene action, significantly suppressed the enhanced cold tolerance in OsBIERF3-Ri plants. These data demonstrate that OsBIERF3 positively contributes to immunity against M. oryzae and X. oryzae pv. oryzae but negatively regulates cold stress tolerance in rice.

scholarly journals Ethephon-Induced Ethylene Enhances Starch Degradation and Sucrose Transport with an Interactive Abscisic Acid-Mediated Manner in Mature Leaves of Oilseed rape (Brassica napus L.)

Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1670
Author(s):  
Bok-Rye Lee ◽  
Rashed Zaman ◽  
Van Hien La ◽  
Dong-Won Bae ◽  
Tae-Hwan Kim
Keyword(s):  
Gene Expression ◽  
Abscisic Acid ◽  
Leaf Senescence ◽  
Starch Content ◽  
Starch Degradation ◽  
Bhlh Transcription Factor ◽  
Related Gene ◽  
Ethylene Concentration ◽  
Mature Leaves ◽  
Enhanced Expression

The leaf senescence process is characterized by the degradation of macromolecules in mature leaves and the remobilization of degradation products via phloem transport. The phytohormone ethylene mediates leaf senescence. This study aimed to investigate the ethephon-induced ethylene effects on starch degradation and sucrose remobilization through their interactive regulation with other hormones. Ethephon (2-chloroethylphosphonic acid) was used as an ethylene-generating agent. Endogenous hormonal status, carbohydrate compounds, starch degradation-related gene expression, sucrose transporter gene expression, and phloem sucrose loading were compared between the ethephon-treated plants and controls. Foliar ethephon spray enhanced the endogenous ethylene concentration and accelerated leaf senescence, as evidenced by reduced chlorophyll content and enhanced expression of the senescence-related gene SAG12. Ethephon-enhanced ethylene prominently enhanced the endogenous abscisic acid (ABA) level. accompanied with upregulation of ABA synthesis gene 9-cis-epoxycarotenoid dioxygenase (NCED3), ABA receptor gene pyrabactin resistance 1 (PYR1), and ABA signaling genes sucrose non-fermenting 1 (Snf1)-related protein kinase 2 (SnRK2), ABA-responsive element binding 2 (AREB2), and basic-helix-loop-helix (bHLH) transcription factor (MYC2).) Ethephon treatment decreased starch content by enhancing expression of the starch degradation-related genes α-amylase 3 (AMY3) and β-amylase 1 (BAM1), resulting in an increase in sucrose content in phloem exudates with enhanced expression of sucrose transporters, SUT1, SUT4, and SWEET11. These results suggest that a synergistic interaction between ethylene and ABA might account for sucrose accumulation, mainly due to starch degradation in mature leaves and sucrose phloem loading in the ethephon-induced senescent leaves.

Sign in / Sign up

Export Citation Format

Share Document