scholarly journals Dormancy-Associated MADS-Box (DAM) and the Abscisic Acid Pathway Regulate Pear Endodormancy Through a Feedback Mechanism

2017 ◽  
Vol 58 (8) ◽  
pp. 1378-1390 ◽  
Author(s):  
Pham Anh Tuan ◽  
Songling Bai ◽  
Takanori Saito ◽  
Akiko Ito ◽  
Takaya Moriguchi
Keyword(s):  
Abscisic Acid ◽  
Feedback Mechanism ◽  
Mads Box ◽  
Acid Pathway

scholarly journals Wheat Yellow Mosaic Virus NIb Interacting with Host Light Induced Protein (LIP) Facilitates Its Infection through Perturbing the Abscisic Acid Pathway in Wheat

Biology ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 80 ◽  
Author(s):  
Zhang ◽  
Liu ◽  
Zhong ◽  
Zhang ◽  
Xu ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Mosaic Virus ◽  
Distribution Patterns ◽  
Host Factors ◽  
Bimolecular Fluorescence Complementation ◽  
Yellow Mosaic Virus ◽  
Wheat Yellow Mosaic Virus ◽  
Positive Sense ◽  
Acid Pathway ◽  
Coding Capacity

Positive-sense RNA viruses have a small genome with very limited coding capacity and are highly reliant on host factors to fulfill their infection. However, few host factors have been identified to participate in wheat yellow mosaic virus (WYMV) infection. Here, we demonstrate that wheat (Triticum aestivum) light-induced protein (TaLIP) interacts with the WYMV nuclear inclusion b protein (NIb). A bimolecular fluorescence complementation (BIFC) assay displayed that the subcellular distribution patterns of TaLIP were altered by NIb in Nicotiana benthamiana. Transcription of TaLIP was significantly decreased by WYMV infection and TaLIP-silencing wheat plants displayed more susceptibility to WYMV in comparison with the control plants, suggesting that knockdown of TaLIP impaired host resistance. Moreover, the transcription level of TaLIP was induced by exogenous abscisic acid (ABA) stimuli in wheat, while knockdown of TaLIP significantly repressed the expression of ABA-related genes such as wheat abscisic acid insensitive 5 (TaABI5), abscisic acid insensitive 8 (TaABI8), pyrabatin resistance 1-Llike (TaPYL1), and pyrabatin resistance 3-Llike (TaPYL3). Collectively, our results suggest that the interaction of NIb with TaLIP facilitated the virus infection possibly by disturbing the ABA signaling pathway in wheat.

scholarly journals Abscisic acid pathway involved in the regulation of watermelon fruit ripening and quality trait evolution

PLoS ONE ◽  
2017 ◽  
Vol 12 (6) ◽  
pp. e0179944 ◽  
Author(s):  
Yanping Wang ◽  
Shaogui Guo ◽  
Shouwei Tian ◽  
Jie Zhang ◽  
Yi Ren ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Fruit Ripening ◽  
Quality Trait ◽  
Trait Evolution ◽  
Acid Pathway

Blue light postpones senescence of carnation flowers through regulation of ethylene and abscisic acid pathway-related genes

2020 ◽  
Vol 151 ◽  
pp. 103-112 ◽  
Author(s):  
Mostafa Aalifar ◽  
Sasan Aliniaeifard ◽  
Mostafa Arab ◽  
Mahboobeh Zare Mehrjerdi ◽  
Margrethe Serek
Keyword(s):  
Abscisic Acid ◽  
Blue Light ◽  
Acid Pathway

scholarly journals The Abscisic Acid Pathway Has Multifaceted Effects on the Accumulation of Bamboo mosaic virus

2014 ◽  
Vol 27 (2) ◽  
pp. 177-189 ◽  
Author(s):  
Mazen Alazem ◽  
Kuan-Yu Lin ◽  
Na-Sheng Lin
Keyword(s):  
Abscisic Acid ◽  
Mosaic Virus ◽  
Abiotic Stresses ◽  
Critical Role ◽  
Enzyme Linked Immunosorbent Assay ◽  
Plant Responses ◽  
Virus Induced Gene Silencing ◽  
Biotic And Abiotic Stresses ◽  
Acid Pathway

Accepted 29 October 2013. Abscisic acid (ABA) plays a key role in modulating plant responses to different biotic and abiotic stresses. However, the effect of ABA on virus infection is not fully understood. Here, we describe the effects of the ABA pathway on the accumulation of Bamboo mosaic virus (BaMV) and Cucumber mosaic virus (CMV) in two different hosts: Arabidopsis thaliana and Nicotiana benthamiana. We report that ABA2 plays a critical role in the accumulation of BaMV and CMV. Mutants downstream of ABA2 (aao3, abi1-1, abi3-1, and abi4-1) were susceptible to BaMV, indicating that the ABA pathway downstream of ABA2 is essential for BaMV resistance. The aba2-1 mutant decreased the accumulation of BaMV (+)RNA, (–)RNA, and coat protein, with the most dramatic effect being observed for (–)RNA. These findings were further validated by the use of virus-induced gene silencing and enzyme-linked immunosorbent assay in N. benthamiana. In addition, infecting N. benthamiana with BaMV or CMV increased ABA contents and activated the SA and ABA pathways, thereby disrupting the antagonism between these two cascades. Our findings uncover a novel role for ABA2 in supporting BaMV and CMV accumulation, distinct from the opposing role of its downstream genes.

REFRACTORINESS OF PLATELETS AFTER REVERSIBLE STIMULATION BY ADP, PAF AND AA

1987 ◽  
Author(s):  
R Voss ◽  
H D Ohanes ◽  
H Ditter ◽  
F R Matthias
Keyword(s):  
Arachidonic Acid ◽  
Shape Change ◽  
Platelet Activating Factor ◽  
Human Platelets ◽  
Feedback Mechanism ◽  
Receptor Internalization ◽  
Reversible Aggregation ◽  
Positive Feedback Mechanism ◽  
Acid Pathway ◽  
Induced Aggregation

It has been observed that platelets which have been, stimulated by thrombin, ADP or platelet-activating factor (PAF) show an inhibited response to a subsequent stimulation by the same agonist. We performed a crossover stimulation of human platelets (PRP) with the four agonists ADP, PAF, arachidonic acid(AA) and collagen (COL); after a first stimulation with a dose giving a reversible aggregation (0,1-0,4×10-6M ADP, 0,1-0,5×10-8 M PAF) or a shape change (0,05-0, 1mM AA., 0,4 ug/ml COL) the platelets were again stimulated after 5 min with the same or a higher dose, usuallyresulting in an irK8 reversible aggregation (1,0-3,0×10-6 M ADP, 1,0-5,0×10-8 M PAF, 0,3-0,5mM AA, 1,0 ug/ml COL).ADP-, PAF- and AA-stimulation were inhibited by a prestimulation with the same agonist (ADP/ADP 60% inhibition, PAF/PAF 100% inhibition, AA/AA 10% inhibition) ; ADP and PAF did not or only slightly inhibit each other. Prestimulation with AA changed a reversible ADP- or PAF-induced aggregation into an irreversible one, and a reversible AA-stimulation was increased to irreversible by ADP-prestimulation. COL-aggregation was not influenced by any prestimulation nor did a COL-presti-mulation influence the second stimulation by any of the four agonists.The refractoriness of platelets for ADP and PAF after prestimulation with the same agonist may be explained by receptor internalization; in the case of ADP the effect lasted for at least one hour. The enhancement of ADP- and PAF-aggregation by an AA-prestimulation can be explained by other investigations which have shown that the arachidonic acid pathway acts as a positive feedback mechanism in platelets.

scholarly journals Ethylene Responses in Rice Roots and Coleoptiles Are Differentially Regulated by a Carotenoid Isomerase-Mediated Abscisic Acid Pathway

2015 ◽  
Vol 27 (4) ◽  
pp. 1061-1081 ◽  
Author(s):  
Cui-Cui Yin ◽  
Biao Ma ◽  
Derek Phillip Collinge ◽  
Barry James Pogson ◽  
Si-Jie He ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Rice Roots ◽  
Carotenoid Isomerase ◽  
Acid Pathway

scholarly journals Transcriptional Landscape of Pathogen-responsive Lncrnas Reveals OS_LNC1812-Induced Disease Resistance by Abscisic Acid Pathway in Rice

2021 ◽  
Author(s):  
Weilin Cao ◽  
Liming Gan ◽  
Junyuan Cao ◽  
Ruolin wang ◽  
Ying Li ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Disease Resistance ◽  
Plant Disease Resistance ◽  
Plant Disease ◽  
Intron Retention ◽  
Rice Stripe Virus ◽  
Plant Genome ◽  
Regulatory Relationship ◽  
Acid Pathway ◽  
Responsive Element

Abstract Background: Long non-coding RNAs (lncRNAs) produced by the plant genome are essential regulators in diverse biological processes. Despite increasing knowledge of lncRNAs in plant development, little is known about responding to plant disease, especially in rice. Results: In this study, we investigated a comprehensive disease-responding lncRNA profiles in rice defence against Rice black-streaked dwarf virus (RBSDV) and Rice stripe virus (RSV) for the first time. Analysis of RNA sequencing of rice leaves infected with the two pathogens identified total 1,925 lncRNAs, in which 724 lncRNA were derived from alternative splicing (AS) events and the largest number of lncRNAs produced by intron retention (IR) of AS events. We calculated the regulatory relationship between transcription factors, lncRNAs, and mRNAs by constructing gene regulatory network and found that a lncRNA, OS_LNC1812 regulated by Os01t0730700-01 encoding transcription factor WRKY14 may target abscisic acid (ABA) responsive element binding factor ABF (Os01t0867300-01) involved in ABA signaling pathway during pathogens infection. We subsequently found that highly expression of OS_LNC1812, WRKY14, and ABF after ABA treatment. Conclusions: Our results reveal the common lncRNAs profiles respond to RBSDV and RSV in rice and provide novel potential modulation of lncRNAs in ABA pathway in the regulation of plant disease resistance.

scholarly journals Novel regulation of transpiration by sugar signals within guard cells

2012 ◽  
Author(s):  
David Granot ◽  
Sarah M. Assmann
Keyword(s):  
Abscisic Acid ◽  
Signaling Pathway ◽  
Water Loss ◽  
Stomatal Closure ◽  
Guard Cells ◽  
Feedback Mechanism ◽  
Limiting Factor ◽  
Aba Signaling ◽  
Sugar Sensing ◽  
New Discovery

Water is the major limiting factor in agriculture and stomata, composed of two guard cells and the pore they circumscribe, are the chief gates controlling plants’ water loss. The prevailing century old paradigm was that sugars act as an osmoticum in guard cells, contributing to the opening of the stomata. In contrast, we discovered that sugars close stomata and the closure is mediated by the sugar-sensing enzyme hexokinase (HXK) that triggers the abscisic acid (ABA)-signaling pathway within the guard cells. This new discovery suggests a sugar-sensing mechanism within guard cells that controls stomatal closure, and supports the existence of a stomatal feedback mechanism that coordinates photosynthesis with transpiration.

OsDOG1L-3 regulates seed dormancy through the abscisic acid pathway in rice

Plant Science ◽  
2020 ◽  
Vol 298 ◽  
pp. 110570
Author(s):  
Qian Wang ◽  
Qibing Lin ◽  
Tao Wu ◽  
Erchao Duan ◽  
Yunshuai Huang ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Seed Dormancy ◽  
Acid Pathway

scholarly journals NO GAMETOPHORES 2 is a novel regulator of the 2D to 3D growth transition in the moss Physcomitrium patens

2020 ◽  
Author(s):  
Laura A. Moody ◽  
Steven Kelly ◽  
Roxaana Clayton ◽  
Zoe Weeks ◽  
David M. Emms ◽  
...  
Keyword(s):  
Physcomitrella Patens ◽  
Lignin Biosynthesis ◽  
Morphological Diversity ◽  
Feedback Mechanism ◽  
3 Dimensional ◽  
History Of ◽  
Acid Pathway ◽  
Life On Earth ◽  
Colonization Of Land ◽  
2D To 3D

SUMMARYThe colonization of land by plants was one of the most transformative events in the history of life on Earth. The transition from water, which coincided with and was likely facilitated by the evolution of 3-dimensional (3D) growth, enabled the generation of morphological diversity on land. In many plants, the transition from 2-dimensional (2D) to 3D growth occurs during embryo development. However, in the early divergent moss Physcomitrium patens (formerly Physcomitrella patens), 3D growth is preceded by an extended filamentous phase that can be maintained indefinitely. Here, we describe the identification of the cytokinin-responsive NO GAMETOPHORES 2 (PpNOG2) gene, which encodes a shikimate o- hydroxycinnamoyltransferase. In mutants lacking PpNOG2 function, transcript levels of CLAVATA and SCARECROW genes are significantly reduced, excessive gametophore initial cells are produced, and buds undergo premature developmental arrest. Our results suggest that PpNOG2 functions in the ascorbic acid pathway leading to cuticle formation, and that NOG2-related genes were co-opted into the lignin biosynthesis pathway after the divergence of bryophytes and vascular plants. We present a revised model of 3D growth in which PpNOG2 comprises part of a feedback mechanism that is required for the modulation of gametophore initial cell frequency. We also propose that the 2D to 3D growth transition in P. patens is underpinned by complex auxin-cytokinin crosstalk that is regulated, at least in part, by changes in flavonoid metabolism.

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