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. 2024 Aug 6;11(10):uhae219. doi: 10.1093/hr/uhae219

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© The Author(s) 2024. Published by Oxford University Press on behalf of Nanjing Agricultural University.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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CaPOA1 silencing reduces the cold tolerance of pepper. Values are means ± SD from three independent experiments. Values with different letters above the bars are significantly different at P < 0.05. (a) Comparison phenotypes between CaPOA1-silenced plants and control plants. (b) Total chlorophyll content. (c) Net photosynthetic rate. (d) Fv/Fm. (e) ETR. (f) qP. (g) qN. (h) Transverse sections of leaves of CaPOA1-silenced plants and control plants at low temperature. PP: palisade tissue; SP: spongy tissue. (i) NBT and DAB histochemical staining. (j) H₂O₂ content. (k) O₂⁻ content. (l) Electrolyte permeability.