Plant, Cell & Environment最新文献_第10页

LbHKT1;1 Negatively Regulates Salt Tolerance of Limonium bicolor by Decreasing Salt Secretion Rate of Salt Glands. LbHKT1；1通过降低盐腺分泌盐的速率负向调节双色铵的耐盐性。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-01-09 DOI: 10.1111/pce.15375

Zhihui Zhu, Xiuyue Liu, Fanxia Meng, Aijuan Jiang, Yuqing Zhou, Fang Yuan, Min Chen

{"title":"LbHKT1;1 Negatively Regulates Salt Tolerance of Limonium bicolor by Decreasing Salt Secretion Rate of Salt Glands.","authors":"Zhihui Zhu, Xiuyue Liu, Fanxia Meng, Aijuan Jiang, Yuqing Zhou, Fang Yuan, Min Chen","doi":"10.1111/pce.15375","DOIUrl":"https://doi.org/10.1111/pce.15375","url":null,"abstract":"The HKT-type proteins have been extensively studied and have been shown to play important roles in long-distance Na+ transport, maintaining ion homoeostasis and improving salt tolerance in plants. However, there have been no reports on the types, characteristics and functions of HKT-type proteins in Limonium bicolor, a recretohalophyte species with the typical salt gland structure. In this study, five LbHKT genes were identified in L. bicolor, all belonging to subfamily 1 (HKT1). There are many cis-acting elements related to abiotic/biotic stress response on the promoters of the LbHKT genes. LbHKT1;1 was investigated in detail. Subcellular localization results showed that LbHKT1;1 is targeted to the plasma membrane. Functional analysis in yeast showed that LbHKT1;1 has a higher tolerance than AtHKT1;1 under high Na+ conditions. Silencing and overexpression of the LbHKT1;1 gene in L. bicolor showed that LbHKT1;1 negatively regulates salt secretion by the salt glands. Further experiments showed that LbbZIP52 can specifically bind to the ABRE element in the LbHKT1;1 promoter and regulate the expression of the LbHKT1;1 gene and is involved in the negative regulation of the salt secretion capacity of L. bicolor. This study demonstrates for the first time that the HKT-type protein is involved in salt secretion by salt glands and provides a new perspective on the function of HKT-type proteins under salt stress conditions.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941996","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

Non-Additive Gene Expression in Carbon and Nitrogen Metabolism Drives Growth Heterosis in Populus deltoides. 碳氮代谢非加性基因表达驱动三角杨生长杂种优势

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-01-09 DOI: 10.1111/pce.15371

Jing Zhang, Weixi Zhang, Changjun Ding, Jun Zhao, Xuehui Su, Zhengsai Yuan, Yanguang Chu, Qinjun Huang, Xiaohua Su

{"title":"Non-Additive Gene Expression in Carbon and Nitrogen Metabolism Drives Growth Heterosis in Populus deltoides.","authors":"Jing Zhang, Weixi Zhang, Changjun Ding, Jun Zhao, Xuehui Su, Zhengsai Yuan, Yanguang Chu, Qinjun Huang, Xiaohua Su","doi":"10.1111/pce.15371","DOIUrl":"https://doi.org/10.1111/pce.15371","url":null,"abstract":"Growth heterosis is crucial for Populus deltoides breeding, a key industrial-timber and ecological-construction tree species in temperate regions. However, the molecular mechanisms underlying carbon (C)-nitrogen (N) metabolism coordination in regulating growth heterosis remain unclear. Herein high-hybrids of P. deltoides exhibited high-parent heterosis and mid-parent heterosis in growth traits and key enzymes of C-N metabolism. In hybrids, gene expression patterns were mainly biased toward female parent. Parental contribution to growth heterosis in P. deltoides is differentiation, rather than absolute maternal or paternal dominance contributions. Parental genes were predominantly and dynamically inherited in a non-additive manner, mainly with dominant expression patterns. A total of 44 non-additive genes associated with photosynthetic C fixation, starch and sucrose metabolism, sucrose transport, photorespiration, and nitrogen metabolism coregulated growth heterosis by coordinating C-N metabolism. Growth-regulating factors 4 interacted with DELLA genes to promote growth by enhancing this coordination. Additionally, five critical genes were identified. Briefly, the above genes in high-hybrids improved photosynthesis and N utilisation by regulating carbohydrate accumulation and enzyme activity, while reducing respiratory energy consumption, thereby providing more energy for growth and promoting growth heterosis. Our findings offer new insights and theoretical basis for deep understanding genetic and molecular regulation mechanisms of tree heterosis and its application in precision hybrid breeding.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142942022","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

Crucial Role of Aluminium-Regulated Flavonol Glycosides (F2-Type) Biosynthesis in Lateral Root Formation of Camellia sinensis. 铝调控黄酮醇苷（f2型）生物合成在茶树侧根形成中的关键作用

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-01-09 DOI: 10.1111/pce.15372

Sanyan Lai, Wenzhuo Wang, Tianlin Shen, Xiu Li, Dexu Kong, Xiaohan Hou, Gao Chen, Liping Gao, Tao Xia, Xiaolan Jiang

{"title":"Crucial Role of Aluminium-Regulated Flavonol Glycosides (F2-Type) Biosynthesis in Lateral Root Formation of Camellia sinensis.","authors":"Sanyan Lai, Wenzhuo Wang, Tianlin Shen, Xiu Li, Dexu Kong, Xiaohan Hou, Gao Chen, Liping Gao, Tao Xia, Xiaolan Jiang","doi":"10.1111/pce.15372","DOIUrl":"https://doi.org/10.1111/pce.15372","url":null,"abstract":"In acidic soil conditions, aluminium (Al) limits crop growth and yields but benefits the growth of tea plants. Flavonols are suggested to form complexes with Al, enhancing Al accumulation in tea plants. The role of flavonols in promoting lateral root formation under Al stress remains unclear. Here, we identified a 7-rhamnosylated type of flavonol glycosides (F2-type) crucial for this process in tea roots. Al treatment significantly stimulated lateral root initiation and bud germination in tea plants, enhancing flavonol glycoside accumulation, particularly the F2-type. Most genes in the flavonol biosynthetic pathway were upregulated post-Al treatment, including CsUGT89AC2/3 genes, which catalyze F2-type flavonol glycosides synthesis in vitro and in vivo. Overexpression of CsUGT89AC2/3 increased lateral root occurrence, flavonol glycoside accumulation and expression of biosynthetic pathway genes in tea roots. Kaempferol treatment activated flavonol pathway genes and stimulated lateral root growth. Al treatment, kaempferol treatment and CsUGT89AC3 overexpression accelerated auxin accumulation and expression of auxin-related genes. Therefore, Al stimulates flavonol biosynthetic pathway gene expression, regulates F2-type flavonol biosynthesis, and influences auxin homoeostasis, promoting lateral root formation in tea plants. These findings lay the foundation for further investigation into the mechanisms underlying the Al-mediated promotion of lateral root initiation in tea plants.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941964","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

OsLdh7 Overexpression in Rice Confers Submergence Tolerance by Regulating Key Metabolic Pathways: Anaerobic Glycolysis, Ethanolic Fermentation and Amino Acid Metabolism. 水稻中OsLdh7的过表达通过调节关键代谢途径：厌氧糖酵解、乙醇发酵和氨基酸代谢来获得耐淹性。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-01-09 DOI: 10.1111/pce.15358

Yajnaseni Chatterjee, Surabhi Tomar, Manjari Mishra, Ashwani Pareek, Sneh Lata Singla-Pareek

{"title":"OsLdh7 Overexpression in Rice Confers Submergence Tolerance by Regulating Key Metabolic Pathways: Anaerobic Glycolysis, Ethanolic Fermentation and Amino Acid Metabolism.","authors":"Yajnaseni Chatterjee, Surabhi Tomar, Manjari Mishra, Ashwani Pareek, Sneh Lata Singla-Pareek","doi":"10.1111/pce.15358","DOIUrl":"https://doi.org/10.1111/pce.15358","url":null,"abstract":"Lactate dehydrogenase plays a key role in alleviating hypoxia during prolonged submergence. To explore the function of the OsLdh7 gene in enhancing submergence tolerance, we overexpressed this gene in rice (Oryza sativa cv. IR64) and subjected the transgenic lines to complete inundation. The overexpression lines showed enhanced viability, chlorophyll content and photosystem II (PSII) efficiency compared to wild-type (WT) plants under stress and recovery conditions. Additionally, these lines exhibited better starch accumulation and reduced reactive oxygen species (ROS) accumulation. Protein-protein interaction studies revealed that OsLdh7 interacts with OsLos2, OsPdc2, OsAlaAT2 and OsAsp2. Under submergence, enhanced enzyme activities of OsLdh7, OsAsp2 and OsAdh1 led to higher NAD+ levels, sustaining anaerobic glycolytic flux and increasing pyruvate, a critical carbon source for amino acid metabolism as well as anaerobic fermentation pathways. Elevated l-lactate levels resulted in increased activity of OsPdc2, which eventually led to enhanced ethanol production. The overexpression lines also accumulated higher levels of aspartate, glutamate and alanine, crucial for ROS reduction and energy production during recovery. These findings suggest that OsLdh7 overexpression confers tolerance to submergence stress by regulating the important metabolic pathways- anaerobic glycolysis, ethanolic fermentation and amino acid metabolism in rice.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142942032","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

sly-miR408b Targets a Plastocyanin-Like Protein to Regulate Mycorrhizal Symbiosis in Tomato. sly-miR408b靶向一种质体青素样蛋白调控番茄菌根共生

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-01-09 DOI: 10.1111/pce.15363

Yibin Lin, Chenling He, Zhenfang Li, Yingying Sun, Lu Tong, Xinyu Chen, Rensen Zeng, Zhenxia Su, Yuanyuan Song

{"title":"sly-miR408b Targets a Plastocyanin-Like Protein to Regulate Mycorrhizal Symbiosis in Tomato.","authors":"Yibin Lin, Chenling He, Zhenfang Li, Yingying Sun, Lu Tong, Xinyu Chen, Rensen Zeng, Zhenxia Su, Yuanyuan Song","doi":"10.1111/pce.15363","DOIUrl":"https://doi.org/10.1111/pce.15363","url":null,"abstract":"Symbiosis between arbuscular mycorrhizal fungi and plants plays a crucial role in nutrient acquisition and stress resistance for terrestrial plants. microRNAs have been reported to participate in the regulation of mycorrhizal symbiosis by controlling the expression of their target genes. Herein, we found that sly-miR408b was significantly downregulated in response to mycorrhizal colonisation. Overexpression of sly-miR408b compromised mycorrhizal colonisation by Rhizophagus irregularis in tomato (Solanum lycopersicum) roots. A basic blue protein gene (SlBBP) was then identified as the new target gene of miR408b in tomato. The expression of membrane-located SlBBP was induced in a copper-dependent manner. Importantly, the loss function of SlBBP decreased the root mycorrhizal colonisation. Overexpression of SlBBP decreased SOD activity, which may interfere with the process of scavenging excessive reactive oxygen species (ROS). Mutation of RBOH1, which encodes ROS-producing enzymes NADPH oxidases, obviously reduced the arbuscule abundance in the mutant roots. Overall, our results provide evidence that sly-miR408b and its target gene SlBBP regulate mycorrhizal symbiosis in tomato through mediating ROS production.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142942038","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

Circadian Proteomics Reassesses the Temporal Regulation of Metabolic Rhythms by Chlamydomonas Clock. 昼夜蛋白组学重新评估衣藻时钟对代谢节律的时间调节。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-01-08 DOI: 10.1111/pce.15354

Dinesh Balasaheb Jadhav, Sougata Roy

{"title":"Circadian Proteomics Reassesses the Temporal Regulation of Metabolic Rhythms by Chlamydomonas Clock.","authors":"Dinesh Balasaheb Jadhav, Sougata Roy","doi":"10.1111/pce.15354","DOIUrl":"https://doi.org/10.1111/pce.15354","url":null,"abstract":"Circadian clocks execute temporal regulation of metabolism by modulating the timely expression of genes. Clock regulation of mRNA synthesis was envisioned as the primary driver of these daily rhythms. mRNA oscillations often do not concur with the downstream protein oscillations, revealing the importance to study protein oscillations. Chlamydomonas reinhardtii is a well-studied miniature plant model. We quantitatively probed the Chlamydomonas proteome for two subsequent circadian cycles using high throughput SWATH-DIA mass spectrometry. We quantified > 1000 proteins, half of which demonstrate circadian rhythms. Among these rhythmic proteins, > 90% peak around subjective midday or midnight. We uncovered key enzymes involved in Box C/D pathway, amino acid biosynthesis, fatty acid (FA) biosynthesis and peroxisomal β-oxidation of FAs are driven by the clock, which were undocumented from earlier transcriptomic studies. Proteins associated with key biological processes such as photosynthesis, redox, carbon fixation, glycolysis and TCA cycle show extreme temporal regulation. We conclude that circadian proteomics is required to complement transcriptomic studies to understand the complex clock regulation of organismal biology. We believe our study will not only refine and enrich the evaluation of temporal metabolic processes in C. reinhardtii but also provide a novel understanding of clock regulation across species.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941926","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

Convergent Isobilateral Leaves Increase the Risk for Mangroves Facing Human-Induced Rapid Environmental Changes. 趋同的等侧叶增加了红树林面临人类引起的快速环境变化的风险。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-01-08 DOI: 10.1111/pce.15373

Yulin Weng, Dandan Qin, Xiao Li, Jiawen Zhou, Bowen Zhang, Qingshun Quinn Li

{"title":"Convergent Isobilateral Leaves Increase the Risk for Mangroves Facing Human-Induced Rapid Environmental Changes.","authors":"Yulin Weng, Dandan Qin, Xiao Li, Jiawen Zhou, Bowen Zhang, Qingshun Quinn Li","doi":"10.1111/pce.15373","DOIUrl":"https://doi.org/10.1111/pce.15373","url":null,"abstract":"Understanding plant adaptations in extreme environments is crucial, as these adaptations often confer advantages for survival. However, a significant gap exists regarding the genetic mechanisms underlying these adaptations and their responses to human-induced rapid environmental change (HIREC). This study addresses the question of whether genetic convergence occurs among plants with similar adaptive features, specifically focusing on isobilateral leaves in mangrove species. Here, we analyse the genetic convergence of isobilateral leaves in mangroves that have independently adapted to coastal intertidal zones. Our findings reveal that genetic convergence is evident in gene families involved in leaf abaxial and adaxial development, with strong selection pressures identified in photosynthesis and leaf polarity pathways. Despite these adaptations, mangrove species with isobilateral leaves occupy narrower ecological niches and face diminishing suitable habitat areas projected under various HIREC scenarios. These results indicate that while convergent traits enhance local adaptation, they may also increase vulnerability to ongoing environmental changes. This research provides valuable insight into the interplay between genetic adaptation and environmental resilience, underscoring the necessity for targeted biodiversity conservation strategies that safeguard specific adaptive traits amid rapid environmental shifts.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941940","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

Epigenetic Mechanisms Driving Adaptation in Tropical and Subtropical Plants: Insights and Future Directions. 驱动热带和亚热带植物适应的表观遗传机制：见解和未来方向。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-01-08 DOI: 10.1111/pce.15370

Matin Miryeganeh

引用次数: 0

The CmTGA1-CmRbohD Cascade Confers Resistance Against Chrysanthemum White Rust by Promoting Reactive Oxygen Species Generation. CmTGA1-CmRbohD级联通过促进活性氧生成来抵抗菊花白锈病。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-01-08 DOI: 10.1111/pce.15377

Qi Chen, Ruibing Jin, Di Liu, Siqi Wang, Changge Chen, Hongyu Mao

{"title":"The CmTGA1-CmRbohD Cascade Confers Resistance Against Chrysanthemum White Rust by Promoting Reactive Oxygen Species Generation.","authors":"Qi Chen, Ruibing Jin, Di Liu, Siqi Wang, Changge Chen, Hongyu Mao","doi":"10.1111/pce.15377","DOIUrl":"https://doi.org/10.1111/pce.15377","url":null,"abstract":"Chrysanthemum white rust (CWR), caused by Puccinia horiana Heen., is a serious disease of chrysanthemum worldwide. This disease reduces the quality and yield of Chrysanthemum morifolium, leading to significant losses for chrysanthemum growers and industries. It is often referred to as the 'cancer' of chrysanthemum. The most effective approach to managing CWR is to utilise host resistance. Reactive oxygen species (ROS) are conserved basic defence compounds in higher plants that are generated in response to biotic stresses. This study reported the TGACG-binding (TGA) transcription factor 1 (CmTGA1) in chrysanthemum. Subcellular localisation analysis revealed that CmTGA1 is localised in the nucleus and cytoplasm. Overexpression or knockout of CmTGA1 in chrysanthemum increased or reduced CWR resistance by regulating ROS generation, the activities of antioxidant enzymes, and CmRbohD (a gene mediating ROS generation) expression. Yeast one-hybrid, dual-luciferase, and electrophoretic mobility shift assays showed that CmTGA1 bound directly to the as-1 element in the promoter region of CmRbohD. Subcellular localisation analysis revealed that CmRbohD was localised in the cytomembrane and cytoplasm. CmRbohD was induced by P. horiana infection and enhanced CWR resistance by promoting ROS generation, activating the antioxidant enzyme system, and catalysing lignin biosynthesis. Our results showed that CmTGA1 activated CmRbohD to improve the CWR resistance via the ROS pathway in chrysanthemum. Our findings provided novel insights into the regulatory pathways involving the CmTGA1-CmRbohD cascade-mediated regulation of CWR resistance, demonstrating an effective strategy to improve tolerance to P. horiana in chrysanthemum.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142942007","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

Hydraulic Properties of a Rock-Soil-Root System: Insights From Fraxinus ornus L. Saplings Growing on Different Carbonate Rocks. 岩石-土壤根系的水力特性：来自生长在不同碳酸盐岩上的白蜡树苗的见解。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-01-08 DOI: 10.1111/pce.15369

Sara Di Bert, Martina Tomasella, Patrick Duddek, Sara Natale, Francesco Petruzzellis, Andrea Carminati, Luca Zini, Lorenzo D'Amico, Giuliana Tromba, Andrea Nardini

{"title":"Hydraulic Properties of a Rock-Soil-Root System: Insights From Fraxinus ornus L. Saplings Growing on Different Carbonate Rocks.","authors":"Sara Di Bert, Martina Tomasella, Patrick Duddek, Sara Natale, Francesco Petruzzellis, Andrea Carminati, Luca Zini, Lorenzo D'Amico, Giuliana Tromba, Andrea Nardini","doi":"10.1111/pce.15369","DOIUrl":"https://doi.org/10.1111/pce.15369","url":null,"abstract":"Drought impacts trees in varied temporal and spatial patterns, suggesting that heterogeneity of below-ground water stores influences the fate of trees under water stress. Karst ecosystems rely on shallow soil overlying bedrock that can store available water in primary pores. A contribution of rock moisture to tree water status has been previously demonstrated, but actual mechanisms and rates of rock-to-root water delivery remain unknown. We report accurate measurements of hydraulic properties of two rock types (Breccia and Dolostone), of typical Karst red soil, and of roots of a common Karst tree species grown under different rock-soil combinations. Experimental data were used to build a water exchange model that supported the hypothesis that roots can extract water from porous and highly conductive rocks (Breccia), but not from more compact ones (Dolostone), especially when plants grow in rocky substrate or experience water stress, and thus have low root hydraulic conductivity and low rates of water extraction from rocks. Our data support the hypothesis that rocks represent important water stores for plants growing in rock-dominated habitats. Heterogeneous rock properties translate into different rates of water delivery to root systems, underlying complex patterns of tree mortality under severe drought stress.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941971","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