Plant Physiology最新文献

Photosynthetic acclimation of wheat (Triticum aestivum) to winter. 小麦（Triticum aestivum）对冬季的光合适应。

IF 6.5 1区生物学

Plant Physiology Pub Date : 2025-07-04 DOI: 10.1093/plphys/kiaf260

Yu-Ting Li, Yue-Nan Li, Qiang Zhang, Cheng Yang, Yan-Ni Xu, Shi-Jie Zhao, Xue-Li Qi, Xiang-Dong Li, Zi-Shan Zhang

{"title":"Photosynthetic acclimation of wheat (Triticum aestivum) to winter.","authors":"Yu-Ting Li, Yue-Nan Li, Qiang Zhang, Cheng Yang, Yan-Ni Xu, Shi-Jie Zhao, Xue-Li Qi, Xiang-Dong Li, Zi-Shan Zhang","doi":"10.1093/plphys/kiaf260","DOIUrl":"https://doi.org/10.1093/plphys/kiaf260","url":null,"abstract":"Overwintering performance limits the distribution range and yield of winter wheat (Triticum aestivum). Systematic research on the overwintering strategies of wheat is lacking. We conducted a detailed analysis of structural, physiological, and metabolic changes in the wheat leaves of plants growing at coordinates 36°11'N, 117°7'E from autumn to the following spring. Light--heat resources and multiple stresses, including cold, bright light, and repeated freeze-thaw cycles, coexist in winter. Wheat leaves retained a complete photosynthetic apparatus, induced sustained nonphotochemical quenching during the cold period in winter, and relaxed nonphotochemical quenching rapidly during the warm period. Thus, the photosynthetic apparatus of wheat switched quickly between photosynthetic carbon assimilation and the photoprotective state during the winter. This response is different from that of evergreen conifers, which cease growth and photosynthetic carbon assimilation and are in a photoprotective state throughout the winter. The unique overwintering strategy of wheat allows it to effectively use light-heat resources in winter but leads to oxidative damage to the biomembrane and an imbalanced cellular redox, despite increased levels of the secondary metabolites phenylpropanoid and antioxidant flavonoids, restricting the expansion of winter wheat to colder regions.","PeriodicalId":20101,"journal":{"name":"Plant Physiology","volume":" ","pages":""},"PeriodicalIF":6.5,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144560791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The transcriptional repressors IAA5 and IAA29 participate in DNA damage-induced stem cell death in Arabidopsis roots. 转录抑制因子IAA5和IAA29参与拟南芥根系DNA损伤诱导的干细胞死亡。

IF 6.5 1区生物学

Plant Physiology Pub Date : 2025-07-04 DOI: 10.1093/plphys/kiaf303

Naoki Takahashi, Nobuo Ogita, Toshiya Koike, Kohei Nishimura, Soichi Inagaki, Ye Zhang, Takumi Higaki, Masaaki Umeda

{"title":"The transcriptional repressors IAA5 and IAA29 participate in DNA damage-induced stem cell death in Arabidopsis roots.","authors":"Naoki Takahashi, Nobuo Ogita, Toshiya Koike, Kohei Nishimura, Soichi Inagaki, Ye Zhang, Takumi Higaki, Masaaki Umeda","doi":"10.1093/plphys/kiaf303","DOIUrl":"https://doi.org/10.1093/plphys/kiaf303","url":null,"abstract":"Plants generate organs continuously during post-embryonic development. Thus, their ability to preserve stem cells in changing environments is crucial for their survival. Genotoxic stress threatens genome stability in all somatic cells. However, in the meristem, only the stem cells actively die in response to DNA damage, followed by stem cell replenishment that guarantees genome stability in these cells. Cytokinin biosynthesis-induced inhibition of downward auxin flow participates in DNA damage-induced stem cell death in roots. Without this system, stem cell death occurs at a reduced but significant level, suggesting another mechanism governing the DNA damage response in stem cells. Here, we demonstrate that in response to DNA double-strand breaks, the AUXIN/INDOLE-3-ACETIC ACID (Aux/IAA) family members IAA5 and IAA29, encoding negative regulators of auxin signaling, are induced in Arabidopsis (Arabidopsis thaliana) roots. The transcription factor SUPPRESSOR OF GAMMA RESPONSE 1 directly induces their expression as an active response to DNA damage. In the iaa5 iaa29 double mutant, DNA damage-induced stem cell death is greatly suppressed, while it is fully restored by the expression of a stable form of IAA5 in vascular stem cells. Our genetic data reveal that reduced auxin signaling around the stem cell niche, caused by IAA5 and IAA29 induction and enhanced cytokinin biosynthesis, is a prerequisite for cell death induction, thus playing a central role in maintaining genome integrity in root stem cells.","PeriodicalId":20101,"journal":{"name":"Plant Physiology","volume":" ","pages":""},"PeriodicalIF":6.5,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144560792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Xanthophyll Cycle balances Photoprotection and Photosynthetic Efficiency in the seawater alga Nannochloropsis oceanica. 海洋纳米绿藻的叶黄素循环平衡光保护和光合效率。

IF 6.5 1区生物学

Plant Physiology Pub Date : 2025-07-04 DOI: 10.1093/plphys/kiaf301

Tim Michelberger, Eleonora Mezzadrelli, Alessandra Bellan, Giorgio Perin, Tomas Morosinotto

{"title":"The Xanthophyll Cycle balances Photoprotection and Photosynthetic Efficiency in the seawater alga Nannochloropsis oceanica.","authors":"Tim Michelberger, Eleonora Mezzadrelli, Alessandra Bellan, Giorgio Perin, Tomas Morosinotto","doi":"10.1093/plphys/kiaf301","DOIUrl":"https://doi.org/10.1093/plphys/kiaf301","url":null,"abstract":"Photosynthetic reactions are continuously modulated to respond to highly dynamic environmental conditions. Balancing photosynthesis and photoprotection involves various mechanisms, which differ across phylogenetic groups. One such mechanism that is widespread in photosynthetic eukaryotes is the xanthophyll cycle, which involves the reversible light-dependent conversion between the carotenoids violaxanthin, antheraxanthin, and zeaxanthin. In this study, we investigated the role of the xanthophyll cycle in Nannochloropsis oceanica, a seawater microalga that possesses peculiarly high xanthophyll levels. To this end, we generated and characterized lines with increased levels of the enzymes involved in the xanthophyll cycle, i.e., violaxanthin de-epoxidase (VDE) and zeaxanthin epoxidase (ZEP). We demonstrated that the level of VDE and ZEP is the main factor controlling the overall reaction rates and dynamics of the xanthophyll cycle. Subsequent differences in the xanthophyll profile affect the activation of photoprotection mechanisms such as non-photochemical quenching and tolerance to reactive oxygen species. Interestingly, VDE overexpression enhances high light tolerance, whereas increased ZEP levels facilitate faster recovery after light exposure but also heighten photosensitivity under certain conditions. In addition, light exposure strongly downregulates ZEP activity in Nannochloropsis. Taken together, these findings underscore the critical role of the xanthophyll cycle in regulating photosynthesis in Nannochloropsis. This cycle is not simply a mechanism that responds to excess illumination, but one that balances photoprotection and light-use efficiency under different environmental conditions.","PeriodicalId":20101,"journal":{"name":"Plant Physiology","volume":" ","pages":""},"PeriodicalIF":6.5,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144560793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vertical farming limitations and potential demonstrated by back-of-the-envelope calculations. 垂直农业的局限性和潜力由粗略的计算证明。

IF 6.5 1区生物学

Plant Physiology Pub Date : 2025-07-03 DOI: 10.1093/plphys/kiaf056

Samuel J Lovat, Εlad Noor, Ron Milo

{"title":"Vertical farming limitations and potential demonstrated by back-of-the-envelope calculations.","authors":"Samuel J Lovat, Εlad Noor, Ron Milo","doi":"10.1093/plphys/kiaf056","DOIUrl":"10.1093/plphys/kiaf056","url":null,"abstract":"Improving food security and reducing the environmental footprint of food production is urgently needed to satisfy the growing global population in a time of climate, biodiversity, and water pressures. Indoor vertical farming is largely independent of environmental conditions and is reported to reduce the land and water required for food production. However, vertical farming requires large amounts of energy. Based on the vertical farming energy cost, we derive from basic considerations a current minimum cost of ≈$10/kg dry plant matter. Vertical farming is therefore not currently competitive with dried cereals or pulses (e.g. wheat, rice, and soybeans). We also show limited current competitiveness for products like tomatoes and lettuce, despite a low dry matter content. Whereas the environmental implications of vertical farming depend on the electricity source. Using the average newly installed electricity mix in recent years (predominantly solar and wind, with some coal, natural gas, and bioenergy), vertical farming could substantially increase greenhouse gas emissions and has limited land benefits compared with conventional agriculture. Using exclusively electricity from photovoltaics, some environmental benefits could be achieved for crops with a low dry matter content like lettuce, but this is more limited for dried crops like wheat. The transparent calculations we provide here set out challenges for vertical farming and highlight that improvements in both the overall vertical farming energetic efficiency (≈1% to 2%), as well as low-impact electricity sources are needed in the future.","PeriodicalId":20101,"journal":{"name":"Plant Physiology","volume":" ","pages":""},"PeriodicalIF":6.5,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12225668/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143773027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Focus Issue Editorial: Numeracy, Realism and Relevance in Plant Science. 焦点议题社论：植物科学中的计算能力、现实性和相关性。

IF 7.4 1区生物学

Plant Physiology Pub Date : 2025-07-03 DOI: 10.1093/plphys/kiaf295

Jennifer A N Brophy,Yann-Rong Lin,Jacqueline V Shanks,Alison G Smith,Mary Williams,Andrew D Hanson

引用次数: 0

On the move, direction matters: Polar localization of OsLsi1 for differential uptake of metalloids in rice. 在移动中，方向很重要：水稻对类金属的差异吸收中OsLsi1的极性定位。

IF 6.5 1区生物学

Plant Physiology Pub Date : 2025-07-03 DOI: 10.1093/plphys/kiaf262

Munkhtsetseg Tsednee

引用次数: 0

Editorial: How SynBio can *realistically* impact crop improvement and agriculture. 合成生物如何能够“现实地”影响作物改良和农业。

IF 6.5 1区生物学

Plant Physiology Pub Date : 2025-07-03 DOI: 10.1093/plphys/kiaf179

Merritt Khaipho-Burch, Steven J Burgess, R Clay Wright, Karsten Temme, Catalin Voiniciuc, Andrew D Hanson

引用次数: 0

From peptides to patterning: Redox control of the master regulator PLT2 in Arabidopsis roots. 从多肽到模式：拟南芥根中主调控因子PLT2的氧化还原控制。

IF 6.5 1区生物学

Plant Physiology Pub Date : 2025-07-03 DOI: 10.1093/plphys/kiaf264

Anna Moseler, Blanca Jazmin Reyes-Hernández

引用次数: 0

B-BOX22 isoforms activate expression of MYBs and elicit blue light-induced flavonoid biosynthesis in soybean. B-BOX22亚型激活MYBs的表达，诱导蓝光诱导的大豆类黄酮生物合成。

IF 6.5 1区生物学

Plant Physiology Pub Date : 2025-07-03 DOI: 10.1093/plphys/kiaf302

Junyi Zhan, Haixia Wang, Mengyang Niu, Changjian Bao, Yanning Gong, Gang Hu, Dongqing Xu, Zhenguo Shen, Nana Su

{"title":"B-BOX22 isoforms activate expression of MYBs and elicit blue light-induced flavonoid biosynthesis in soybean.","authors":"Junyi Zhan, Haixia Wang, Mengyang Niu, Changjian Bao, Yanning Gong, Gang Hu, Dongqing Xu, Zhenguo Shen, Nana Su","doi":"10.1093/plphys/kiaf302","DOIUrl":"https://doi.org/10.1093/plphys/kiaf302","url":null,"abstract":"Soybean (Glycine max) accumulates a substantial amount of flavonoids, including anthocyanins and flavonols, which play essential roles in both plant growth and human health. While blue light promotes flavonoid biosynthesis, the regulatory circuitry governing this process remains poorly characterized. Here, we demonstrate that blue light stimulates flavonol and anthocyanin accumulation in soybean hypocotyls by inducing the B-box transcription factor GmBBX22. Mechanistically, GmBBX22 transcripts are alternatively spliced under blue light, generating three isoforms (designated as X1, X2, and X3). Intriguingly, the truncated isoforms X2 and X3 induce flavonol and anthocyanin biosynthesis through distinct regulatory cascades. Rather than directly targeting the biosynthesis flavonol synthase gene (GmFLS) or dihydroflavonol 4-reductase gene (GmDFR), which encode key enzymes for metabolic flux partitioning between flavonols and anthocyanins, X2 and X3 specifically activate the expression of GmMYB12 and GmMYB90, respectively. Subsequent functional analyses revealed that these MYB transcription factors induce GmFLS and GmDFR expression to coordinate flavonol and anthocyanin accumulation. Collectively, our work delineates a splicing-dependent regulatory module where GmBBX22 isoforms mediate light quality adaptation in soybean through divergent transcriptional programming of flavonoid metabolism.","PeriodicalId":20101,"journal":{"name":"Plant Physiology","volume":" ","pages":""},"PeriodicalIF":6.5,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144560789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The peptide hormone RGF1 modulates PLETHORA2 stability via reactive oxygen species-dependent regulation of a cysteine residue. 肽激素RGF1通过活性氧依赖的半胱氨酸残基调节PLETHORA2的稳定性。

IF 6.5 1区生物学

Plant Physiology Pub Date : 2025-07-03 DOI: 10.1093/plphys/kiaf244

Yu-Chun Hsiao, Shiau-Yu Shiue, Ming-Ren Yen, Joon-Keat Lai, Masashi Yamada

{"title":"The peptide hormone RGF1 modulates PLETHORA2 stability via reactive oxygen species-dependent regulation of a cysteine residue.","authors":"Yu-Chun Hsiao, Shiau-Yu Shiue, Ming-Ren Yen, Joon-Keat Lai, Masashi Yamada","doi":"10.1093/plphys/kiaf244","DOIUrl":"https://doi.org/10.1093/plphys/kiaf244","url":null,"abstract":"The Root meristem growth factor 1 (RGF1) peptide extends the PLETHORA2 (PLT2) protein gradient by altering the distinct localization of superoxide (O2-) and hydrogen peroxide (H2O2) among the root developmental zones. However, the underlying mechanism through which reactive oxygen species (ROS) regulate PLT2 stability is unclear. Here, we demonstrate that the 212th cysteine of PLT2 is pivotal in modulating PLT2 stability through ROS. The PLT2 protein concentration gradient rapidly decreases in the elongation zone, where H2O2 accumulation initiates. However, substituting the 212th cysteine of PLT2 with serine (PLT2C212S) results in PLT2 being more stable in the elongation zone, more broadly localized by RGF1, and showing robust resistance to H2O2. The sulfenylation of PLT2 was detected following treatment with H2O2 at high concentrations, suggesting that S-sulfenylation of the 212th cysteine controls PLT2 protein stability through local ROS distributions. These findings show that the formation of the PLT2 concentration gradient through ROS depends on a PLT2 sulfenylation mechanism that involves the 212th cysteine.","PeriodicalId":20101,"journal":{"name":"Plant Physiology","volume":"198 3","pages":""},"PeriodicalIF":6.5,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144560794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0