Plant Biology最新文献_第3页

Unveiling historical connections between island and continental floras: Phylogeographic evidence from Macaronesian bryophytes. 揭示岛屿和大陆植物区系之间的历史联系：来自马卡罗尼西亚苔藓植物的系统地理学证据。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-22 DOI: 10.1111/plb.70294

S Mirolo, A Ledent, J Patiño, F Collart, A Vanderpoorten

{"title":"Unveiling historical connections between island and continental floras: Phylogeographic evidence from Macaronesian bryophytes.","authors":"S Mirolo, A Ledent, J Patiño, F Collart, A Vanderpoorten","doi":"10.1111/plb.70294","DOIUrl":"https://doi.org/10.1111/plb.70294","url":null,"abstract":"Since the traditional perception of islands as sinks of continental biodiversity, the relationships between island and mainland floras have been controversial. In particular, the larger carrying capacity and connectivity of islands during glacial periods has suggested a potentially important role of islands for continental diversity, especially in organisms with high dispersal capacities. Focusing on bryophytes, we determine the historical relationships between island and mainland populations and test the hypothesis that island colonization prevailed during glacial periods. Competing scenarios regarding the biogeographic origin and timing of colonization of islands were tested from analyses of DNA sequence data in 9 amphi-Atlantic species disjunct between Macaronesia and continental regions on both sides of the North Atlantic in a coalescence framework. The Macaronesian bryophyte flora results from a complex mix of origins, with the archipelagos acting as a source or a sink for mainland species from various continents, highlighting the complexity of its assembly mechanisms. No clear pattern emerged regarding the timing of colonization events. Our analyses indicate that extra-European regions have contributed to the diversity of Macaronesian bryophytes much beyond what the 90% of floristic similarity between Europe and Macaronesia would suggest. In groups with high long-distance dispersal capacities like bryophytes, floristic similarity hence appears as a poor indicator of biogeographic origin. The large contribution of extra-European regions to the Macaronesian bryophyte flora also explains why the endemic element has a primarily extra-European origin.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

V₀ and V₁ domains of vacuolar H⁺-ATPase play distinct roles in cadmium tolerance of Broussonetia papyrifera. 液泡H+- atp酶V0和V1结构域在纸莎草耐镉性中起着不同的作用。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-21 DOI: 10.1111/plb.70292

W Tianyu, J Yuying, H Yani, T Xingjing, K Aleem, Y Le, L Peiwei, N R Shahi, X Zhenggang, Y Guiyan

{"title":"V0 and V1 domains of vacuolar H+-ATPase play distinct roles in cadmium tolerance of Broussonetia papyrifera.","authors":"W Tianyu, J Yuying, H Yani, T Xingjing, K Aleem, Y Le, L Peiwei, N R Shahi, X Zhenggang, Y Guiyan","doi":"10.1111/plb.70292","DOIUrl":"https://doi.org/10.1111/plb.70292","url":null,"abstract":"Cadmium (Cd) contamination poses a major threat to forest ecosystems, and Broussonetia papyrifera is a promising woody species with strong Cd tolerance and accumulation capacity. Vacuolar H+-ATPase (V-ATPase) is central to ion homeostasis and heavy metal detoxification, yet the organ- and domain-specific roles of its subunits in Cd responses remain unclear. We integrated physiological measurements, transcript profiling, enzyme activity assays and genome-wide analyses to characterize V-ATPase subunits (BpVHAs) and their functions under a 30-day Cd treatment in roots, stems and leaves of B. papyrifera. Cd stress caused only mild electrolyte leakage but triggered substantial V-ATPase accumulation and enhanced activity. V-ATPase activity displayed a tissue-graded temporal pattern, with roots responding earliest and most strongly. We identified 22 BpVHA genes belonging to conserved V0 and V1 domains, whose promoters were enriched in stress- and hormone-related cis-elements. Most genes exhibited a rise-then-fall expression trend during Cd exposure, with V0 subunits induced earlier, more strongly and for longer than V1 subunits. Mantel tests showed that V1 expression correlated more strongly with V-ATPase activity in roots, whereas V0 expression dominated in stems and leaves. Our findings highlight BpVHA-a2, BpVHA-a3 and BpVHA-c1 as key contributors to Cd detoxification. We propose a model in which roots rely on rapid V1-driven ATP hydrolysis, while aerial tissues depend on sustained V0-mediated proton pumping to support vacuolar Cd sequestration. This study provides new insights into heavy metal tolerance in woody plants and identifies promising molecular targets for breeding and phytoremediation in Cd-contaminated environments.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149015116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Drivers of post-fire resprouting-based resilience of co-occurring species in Mediterranean SE Spain. 西班牙地中海东南部共发生物种火灾后基于呼吸的恢复力驱动因素。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-21 DOI: 10.1111/plb.70296

J M Moya-Pérez, F Lloret, J Margalef-Marrase, M Á Pérez-Navarro, M Á Esteve-Selma

{"title":"Drivers of post-fire resprouting-based resilience of co-occurring species in Mediterranean SE Spain.","authors":"J M Moya-Pérez, F Lloret, J Margalef-Marrase, M Á Pérez-Navarro, M Á Esteve-Selma","doi":"10.1111/plb.70296","DOIUrl":"https://doi.org/10.1111/plb.70296","url":null,"abstract":"Resprouting is a major mechanism of post-fire persistence in Mediterranean woody plants, but quantifying its contribution to resilience is difficult when pre-disturbance data are unavailable. We assessed post-fire resprouting-based resilience in nine co-occurring woody species from southeastern Iberia and tested whether its drivers were consistent across species. We developed species-specific allometric equations from unburned individuals to estimate pre-fire biovolume. Resilience was quantified as the normalized biovolume recovery rate (NBRR), based on the ratio between post-fire biovolume measured 10-12 years after fire and estimated pre-fire biovolume. We then modelled NBRR as a function of microenvironmental conditions, fire severity, climatic niche position and plant size. Allometric models successfully estimated pre-fire biovolume and enabled resilience quantification. All species resprouted, and six exceeded their estimated pre-fire biovolume. However, resilience drivers varied among species. Environmental harshness reduced resilience in three species, fire severity increased resilience in four species under predominantly low-to-moderate severity, and larger pre-fire individuals generally showed lower recovery, whereas climatic niche position did not explain resilience. Plant-level biovolume modelling provides a practical framework to quantify post-fire resilience in resprouting species when pre-fire data are lacking. Strong interspecific variation in resilience drivers suggests that complementary responses among co-occurring species may enhance resilience at the community level.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149015091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Effect of selenium hyperaccumulation on the root endophytic and rhizosphere microbiome of two Astragalus species 硒过量积累对两种黄芪根内生和根际微生物组的影响。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-17 Epub Date: 2026-07-13 DOI: 10.1111/plb.70263

C. Dotson, C. Kurowski, M. Grillo

引用次数: 0

Microbial volatile compounds enhance drought resilience and productivity in CAM and C3 crops 微生物挥发性化合物提高CAM和C3作物的抗旱性和生产力。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-17 Epub Date: 2026-07-06 DOI: 10.1111/plb.70253

Z. F. Nieves-López, I. U. Merino-Espinoza, F. Ureta-Quiroz, S. Gudiño-Vallejo, M. Heil, L. P. Partida-Martínez

引用次数: 0

Decoupling low phytic acid from growth penalties by targeting PHR1/PHL1 in Arabidopsis 靶向拟南芥PHR1/PHL1的低植酸解耦研究

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-17 Epub Date: 2026-06-15 DOI: 10.1111/plb.70241

S. Ge, K. Chen, F. Guo, M. Xiao, Q. Lv, G.-Y. An, J. Dong, M. Lei

引用次数: 0

The biocontrol potential of Streptomyces polychromogenes YKL-11 against apple replant disease: Inhibition of the growth of pathogenic Fusarium and remodelling of soil microbial flora 多色链霉菌YKL-11对苹果再植病害的生物防治潜力：抑制致病性镰刀菌生长和重塑土壤微生物区系

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-17 Epub Date: 2026-06-15 DOI: 10.1111/plb.70243

X. Li, J. Lv, L. Zhao, Q. Chang, K. Zhao, X. Chen, Y. Liu, C. Yin, Z. Mao

引用次数: 0

The stoichiometric decoupling of leaf Ca to K and Mg is driven by their differential responses to climate 叶片钙与钾和镁的化学计量解耦是由它们对气候的不同响应驱动的。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-17 Epub Date: 2026-07-02 DOI: 10.1111/plb.70249

J. Chen, Z. Shi, D. Ding, X. Lin, J. Wang, Q. Meng, W. Han

引用次数: 0

Anthocyanins and betalains in evolution: Why mutual exclusion remains the best-supported model 进化中的花青素和甜菜素：为什么相互排斥仍然是最受支持的模型。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-17 Epub Date: 2026-07-02 DOI: 10.1111/plb.70254

B. Pucker, M. I. Khan

{"title":"Anthocyanins and betalains in evolution: Why mutual exclusion remains the best-supported model","authors":"B. Pucker, M. I. Khan","doi":"10.1111/plb.70254","DOIUrl":"10.1111/plb.70254","url":null,"abstract":"Anthocyanins and betalains are hydrophilic plant pigments with numerous physiological and ecological functions. The biosynthesis routes of anthocyanins and betalains differ, with anthocyanins being synthesized from phenylalanine via the general phenylpropanoid pathway, whereas betalains are derived from tyrosine. Although the precursors phenylalanine and tyrosine are present in all plants, there is no known plant in which both these pigments are co-accumulated. Most plants synthesize anthocyanins, while certain families in the order Caryophyllales produce betalains. There is an apparent mutual exclusion of these two plant pigments. Over the past five decades, evidence has accumulated supporting this theory of mutual exclusion of the two pigments. However, recently published reports claim the presence of anthocyanins in well-known betalain-pigmented plants without providing the necessary evidence. Here, we critically evaluate the origins of such claims, show how methodological limitations and analytical misinterpretations have led to unsupported reports of anthocyanin–betalain co-occurrence, and provide recommendations to ensure robust evidence standards in future studies of plant pigment biosynthesis.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":"28 6","pages":"1763-1766"},"PeriodicalIF":3.4,"publicationDate":"2026-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/plb.70254","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148374039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Two proteins co-expressed with photosynthetic regulators affect photosynthetic dynamics linked to changes in thylakoid pigment content and composition 与光合调节因子共表达的两种蛋白影响与类囊体色素含量和组成变化有关的光合动力学。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-17 Epub Date: 2026-07-20 DOI: 10.1111/plb.70266

J.-M. Keller, F. Dinc, E. Kaiser, A. Zupok, B. A. Morris, T. von Bismarck, V. Correa Galvis, W. Thiele, D. M. Kramer, P. Jahns, M. A. Schöttler, U. Armbruster

引用次数: 0