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. 2021 Jun 1;8:126. doi: 10.1038/s41438-021-00554-7

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 6 — In common bean, the degradation of damaged D1 protein is mainly dependent on PvFtsH2. Grown under low-light intensity conditions, other PvFtsH members, e.g., PvFtsH5, may be capable of degrading damaged D1 protein in the pvsl1 mutant. As a result, the pvsl1 mutant could survive, flower, and set seeds (left). However, when grown under high-light intensity or sunlight conditions, a large amount of photodamaged D1 protein could not be degraded without functional PvFtsH2 in pvsl1 mutants. Massive accumulation of photodamaged D1 protein may lead to a malfunctional photodamage-repair cycle of PSII and seedling lethality in pvsl1 mutants (right)