Original title: Plant hormone-mediated regulation of stress responses
Plants cannot move away from drought, heat, or pests, so they rely on internal signals to respond. Plant hormones are chemical signals that help control growth and defense. Different hormones can affect one another, a process called crosstalkWhen one signaling pathway affects or interacts with another., so the plant’s response depends on how their signals work together. This review describes those interactions and uses examples such as seed dormancy, where two hormones help regulate whether a seed stays inactive or begins to grow.
Imagine trying to get dinner ready while the power keeps flickering and someone is waiting at the door. You have to decide what to keep doing and what to pause, and each change affects the rest of the meal. In this paper, the meal’s competing needs stand for plant growth and defense, while the changing conditions stand for stress; the hormones are signals whose interactions help shape the plant’s response.
Drought, heat, disease, and pests can all threaten crops, but a plant’s response is not controlled by one signal alone. Understanding how hormones interact could help researchers find ways to breed or engineer crops that tolerate stress while still growing.
The review says that hormone crosstalk and the many signaling intermediates are only beginning to be understood. It does not establish that any particular hormone interaction can already be used to engineer stress-tolerant crops; it presents that as a possible benefit of future research.
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Plant hormone-mediated regulation of stress responses — Vivek Chandra Verma, Pratibha Ravindran, Prakash P. Kumar — BMC Plant Biology — doi:10.1186/s12870-016-0771-y
Abstract licence: CC BY
Explanation generated by Synthesis from the abstract — it is not the original paper.