<scp>LTP3</scp> contributes to disease susceptibility in <scp>A</scp>rabidopsis by enhancing abscisic acid (<scp>ABA</scp>) biosynthesis

Gao, Shan; Guo, Wei; Feng, Wen; Liu, Liang; Song, Xiaorui; Chen, Jian; Hou, Wei; Zhu, Hongfei; Tang, Saijun; Hu, Jian

doi:10.1111/mpp.12290

Cited by 51 publications

(52 citation statements)

References 80 publications

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“…b; Table S2). This gene was previously shown to be strongly induced by ABA (Gao et al ., ). In Ath LTP4 interacts with RACK1, a negative regulator of ABA signaling, which was suggested integrates environmental stress with photosynthesis (Guo et al ., ; Kundu et al ., ).…”

Section: Resultsmentioning

confidence: 99%

Drought resistance is mediated by divergent strategies in closely related Brassicaceae

et al. 2019

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Summary Droughts cause severe crop losses worldwide and climate change is projected to increase their prevalence in the future. Similar to the situation for many crops, the reference plant Arabidopsis thaliana (Ath) is considered drought‐sensitive, whereas, as we demonstrate, its close relatives Arabidopsis lyrata (Aly) and Eutrema salsugineum (Esa) are drought‐resistant. To understand the molecular basis for this plasticity we conducted a deep phenotypic, biochemical and transcriptomic comparison using developmentally matched plants. We demonstrate that Aly responds most sensitively to decreasing water availability with early growth reduction, metabolic adaptations and signaling network rewiring. By contrast, Esa is in a constantly prepared mode as evidenced by high basal proline levels, ABA signaling transcripts and late growth responses. The stress‐sensitive Ath responds later than Aly and earlier than Esa, although its responses tend to be more extreme. All species detect water scarcity with similar sensitivity; response differences are encoded in downstream signaling and response networks. Moreover, several signaling genes expressed at higher basal levels in both Aly and Esa have been shown to increase water‐use efficiency and drought resistance when overexpressed in Ath. Our data demonstrate contrasting strategies of closely related Brassicaceae to achieve drought resistance.

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Section: Resultsmentioning

confidence: 99%

Drought resistance is mediated by divergent strategies in closely related Brassicaceae

et al. 2019

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“…During Pst DC3000 infection, BABA showed a continuous increase over time until reaching 15-fold the control value after 48 hours, 11 whereas in a study by Gao et al 15 . both ABA and SA increased about 25-fold during a period of 36 hours 15 .…”

Section: Similarity and Differences With Classical Plant Hormonesmentioning

confidence: 85%

“…both ABA and SA increased about 25-fold during a period of 36 hours 15 . In addition to P. cucumerina and Pst DC3000 infection, we also tested the levels of BABA after infection with a virulent strain of Hyaloperonospora arabidopsidis.…”

Section: Similarity and Differences With Classical Plant Hormonesmentioning

confidence: 99%

When the story proceeds backward: The discovery of endogenous β-aminobutyric acid as the missing link for a potential new plant hormone

Baccelli

Mauch‐Mani

2017

Communicative & Integrative Biology

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The capacity of β-aminobutyric acid (BABA) to induce resistance in plants against biotic and abiotic stresses has been known for more than 50 y. In the beginning reports were mainly descriptive of the phenomenon, but it became clear with the discovery of BABA insensitive mutants in Arabidopsis that there was definitely a genetic basis underlying BABA-induced resistance. The study of these mutants, along with the use of regular hormone mutants, allowed establishing the defense pathways activated upon defense induction. To date it is clear that BABA potentiates the defense pathway more appropriate to counteract the upcoming stress situation, through a phenomenon termed priming. Interestingly, plants possess a receptor for BABA, but up to recently there was a general consensus on the fact that BABA was a xenobiotic molecule. The development of an accurate non-destructive assay for measuring aminobutyric acid isomers in planta and the finding of plant-produced BABA, thus seems to represent the missing link for the discovery of a novel plant hormone. Differences and similarities with some of the classical plant hormones are presented here.

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“…From the group of LTPs, the most overrepresented LTP4 expressed differentially in all samples, is also strongly induced by ABA and localized to the cell wall. LTP4 is predicted to be a member of PR-14 pathogenesis-related protein and involved in a wide range of abiotic stress responses (Gao et al, 2015). Down-regulation of aquaporins is an important step in water retention.…”

Section: Discussionmentioning

confidence: 99%

Global Scale Transcriptional Profiling of Two Contrasting Barley Genotypes Exposed to Moderate Drought Conditions: Contribution of Leaves and Crowns to Water Shortage Coping Strategies

et al. 2016

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Drought is a serious threat for sustainable agriculture. Barley represents a species well adapted to environmental stresses including drought. To elucidate the adaptive mechanism of barley on transcriptional level we evaluated transcriptomic changes of two contrasting barley cultivars upon drought using the microarray technique on the level of leaves and crowns. Using bioinformatic tools, differentially expressed genes in treated vs. non-treated plants were identified. Both genotypes revealed tissue dehydration under drought conditions as shown at water saturation deficit and osmotic potential data; however, dehydration was more severe in Amulet than in drought-resistant Tadmor under the same ambient conditions. Performed analysis showed that Amulet enhanced expression of genes related to active plant growth and development, while Tadmor regarding the stimulated genes revealed conservative, water saving strategy. Common reactions of both genotypes and tissues included an induction of genes encoding several stress-responsive signaling proteins, transcription factors as well as effector genes encoding proteins directly involved in stress acclimation. In leaf, tolerant cultivar effectively stimulated mainly the expression of genes encoding proteins and enzymes involved in protein folding, sulfur metabolism, ROS detoxification or lipid biosynthesis and transport. The crown specific reaction of tolerant cultivar was an enhanced expression of genes encoding proteins and enzymes involved in cell wall lignification, ABRE-dependent abscisic acid (ABA) signaling, nucleosome remodeling, along with genes for numerous jasmonate induced proteins.

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LTP3 contributes to disease susceptibility in Arabidopsis by enhancing abscisic acid (ABA) biosynthesis

Cited by 51 publications

References 80 publications

Drought resistance is mediated by divergent strategies in closely related Brassicaceae

Drought resistance is mediated by divergent strategies in closely related Brassicaceae

When the story proceeds backward: The discovery of endogenous β-aminobutyric acid as the missing link for a potential new plant hormone

Global Scale Transcriptional Profiling of Two Contrasting Barley Genotypes Exposed to Moderate Drought Conditions: Contribution of Leaves and Crowns to Water Shortage Coping Strategies

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