[PCA] ARTICLE: How plants communicate with each other when in danger

[Krone, Elizabeth C]

How plants communicate with each other when in danger, Washington Post, October 21, 2023.

Link: https://wapo.st/3FxkbzK


Below is the study referenced in the Washington Post article.

Aratani, Y., Uemura, T., Hagihara, T. et al. Green leaf volatile sensory calcium transduction in Arabidopsis. Nat Commun 14, 6236 (2023). https://doi.org/10.1038/s41467-023-41589-9
Abstract or Summary

Plants perceive volatile organic compounds (VOCs) released by mechanically- or herbivore-damaged neighboring plants and induce various defense responses. Such interplant communication protects plants from environmental threats. However, the spatiotemporal dynamics of VOC sensory transduction in plants remain largely unknown. Using a wide-field real-time imaging method, we visualize an increase in cytosolic Ca2+ concentration ([Ca2+]cyt) in Arabidopsis leaves following exposure to VOCs emitted by injured plants. We identify two green leaf volatiles (GLVs), (Z)-3-hexenal (Z-3-HAL) and (E)-2-hexenal (E-2-HAL), which increase [Ca2+]cyt in Arabidopsis. These volatiles trigger the expression of biotic and abiotic stress-responsive genes in a Ca2+-dependent manner. Tissue-specific high-resolution Ca2+ imaging and stomatal mutant analysis reveal that [Ca2+]cyt increases instantly in guard cells and subsequently in mesophyll cells upon Z-3-HAL exposure. These results suggest that GLVs in the atmosphere are rapidly taken up by the inner tissues via stomata, leading to [Ca2+]cyt increases and subsequent defense responses in Arabidopsis leaves.

Link to article: https://www.nature.com/articles/s41467-023-41589-9#Abs1


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