Mechanodetection of neighbor plants elicits adaptive leaf movements through calcium dynamics

Pantazopoulou, Chrysoula K; Buti, Sara; Nguyen, Chi Tam; Oskam, Lisa; Farmer, Edward E.; Kajala, Kaisa; Pierik, R.L.M.

doi:10.1101/2022.01.28.478192

Cited by 3 publications

(1 citation statement)

References 49 publications

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“…Low ratio of red light to far red light (R:FR) under dense planting the conditions induced PIP2 hydrolysis to inhibit plants branching (32)(33)(34)(35). Furthermore, the touch among leaves of neighboring plants under dense planting conditions triggered calcium signaling (36). TabZIP45-4B regulated downstream events by calcium signaling (Fig.…”

Section: The Mutation Of Tabzip45-4b Increased Grain Yield Under Dens...mentioning

confidence: 99%

Adaptation to climate change through dense planting for sustainable agriculture

Huang

Zhao

et al. 2022

Preprint

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Overuse of fertilizers increased greenhouse gases emissions, induced global climate changes and extreme weather and made future agriculture unsustainable. Engineering crops to adapt to stressed conditions is crucial. Here, we cloned a transcription factor TabZIP45 (basic region zipper), controlled by a microRNA binding site polymorphism, conferring adaptation to both nitrogen deficiency and dense planting. TabZIP45 interacted with TaFTL43 (Flowering locus T like43) to change gene expression regulation. TabZIP45 coordinated phosphatidylinositol diphosphate (PIP2) metabolism and calcium (Ca2+) signaling to adapt to environmental stresses. Knockout of TabZIP45-4B by genome editing rescued grain yield loss caused by nitrogen deficiency by modulation of TaDwarf4 under dense planting through Ca2+ signaling disruption. Thus, TabZIP45-4B edited wheat warranted a sustainable and environmentally friendly way to enhance grain yield under adverse conditions.One-Sentence SummaryCalcium and lipids integrated adverse environmental signaling to modulate plant growth

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Section: The Mutation Of Tabzip45-4b Increased Grain Yield Under Dens...mentioning

confidence: 99%

Adaptation to climate change through dense planting for sustainable agriculture

Huang

Zhao

et al. 2022

Preprint

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Dynamic calcium signals mediate the feeding response of the carnivorous sundew plant

Procko

Radin

Hou

et al. 2022

Proc. Natl. Acad. Sci. U.S.A.

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Some of the most spectacular examples of botanical carnivory—in which predator plants catch and digest animals presumably to supplement the nutrient-poor soils in which they grow—occur within the Droseraceae family. For example, sundews of the genus Drosera have evolved leaf movements and enzyme secretion to facilitate prey digestion. The molecular underpinnings of this behavior remain largely unknown; however, evidence suggests that prey-induced electrical impulses are correlated with movement and production of the defense hormone jasmonic acid (JA), which may alter gene expression. In noncarnivorous plants, JA is linked to electrical activity via changes in cytoplasmic Ca 2+ . Here, we find that dynamic Ca 2+ changes also occur in sundew ( Drosera spatulata ) leaves responding to prey-associated mechanical and chemical stimuli. Furthermore, inhibition of these Ca 2+ changes reduced expression of JA target genes and leaf movements following chemical feeding. Our results are consistent with the presence of a conserved Ca 2+ -dependent JA signaling pathway in the sundew feeding response and provide further credence to the defensive origin of plant carnivory.

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Control of Small GTPase Ras Using a Calmodulin-based Ionochromic Nanodevice

Zhang,

Sabek,

Maruta

2024

Biosci., Biotech. Res. Asia

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The small GTP-binding protein, HRas, is a switch-like molecule that plays an important role in the regulation of many cell processes. It is activated by binding to GTP and is inactivated when GTP is hydrolyzed to GDP. Ras has two accessory factors, guanine accelerate protein (GAP) and guanine nucleotide exchange factor (GEF), which facilitate its switching function by accelerating GTP hydrolysis and GDP/GTP exchange. Calmodulin (CaM) is a crucial signaling and regulatory molecule involved in many calcium-dependent processes. In the calcium-bound state, CaM binds tightly to the M13 peptide and IQ motif. Because there are no reports using CaM as an ionochromic switch system, CaM was used here to artificially control Ras. An HRas fusion protein with M13 (M13-HRas) was expressed using an established Escherichia coli expression system. M13-HRas showed 73% ion-regulation when the regulatory factors GAP and GEF were present. The CaM-bound state inhibited the interaction between M13-HRas and GST-Raf while maintaining a similar GTPase activity regulation ratio. Finally, the inhibition of CaM binding between M13-HRas and two accessory factors was confirmed. Thus, modifying the G protein functional site with M13 enabled ionochromic control of G protein function with CaM, which has implications for cancer therapy.

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Mechanodetection of neighbor plants elicits adaptive leaf movements through calcium dynamics

Cited by 3 publications

References 49 publications

Adaptation to climate change through dense planting for sustainable agriculture

Adaptation to climate change through dense planting for sustainable agriculture

Dynamic calcium signals mediate the feeding response of the carnivorous sundew plant

Control of Small GTPase Ras Using a Calmodulin-based Ionochromic Nanodevice

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