Plant Biology最新文献_第3页

Global variability in hydraulic traits and water use strategies of mountain shrubs and dwarf shrubs. 山地灌木和矮灌木水力性状的全球变异及水分利用策略。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-09-03 DOI: 10.1111/plb.70088

C Musso, A Ganthaler, S Mayr

{"title":"Global variability in hydraulic traits and water use strategies of mountain shrubs and dwarf shrubs.","authors":"C Musso, A Ganthaler, S Mayr","doi":"10.1111/plb.70088","DOIUrl":"https://doi.org/10.1111/plb.70088","url":null,"abstract":"Shrubs are perennial, multi-stemmed woody plants whose adaptation to stress factors allows them to colonise extreme habitats, including high elevations. Accordingly, shrubs are one of the most important growth forms in mountain regions, but their hydraulic properties are poorly understood. We conducted a literature search on the water use strategies of mountain shrubs, focusing on their main hydraulic traits related to water uptake, transport and release, as well as hydraulic limitations in summer and winter. In addition, the leaf cuticular conductance was measured in selected Alpine species. A total of 104 publications were found, mainly from North America, Europe and Asia, and a few from Africa and South America, with snow and steppe habitats strongly underrepresented. The dataset revealed a wide range of specific hydraulic conductivity (ks; 0.8-25.8 × 10-4 m2s-1 MPa-1), with highest values in tundra shrubs, and of the water potential at 50% conductivity loss (Ψ50; -11.8 to -0.29 MPa), with lowest values in steppe and temperate dry summer species. Deep-rooted shrubs from arid environments had access to more reliable water sources, while others relied on shallow but nutrient-rich soil water. No clear trend was observed along elevation or precipitation gradients, suggesting a wide range of hydraulic strategies to achieve a balanced water status. Shrub species from arid regions have to withstand low water potentials during the dry season, whereas temperate shrubs experience frost drought and freeze-thaw-induced embolism in winter. The literature review revealed major gaps in the geographic distribution of available studies, and in our knowledge of root characteristics, recovery from embolism, and water storage capacity.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144991021","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

A novel functional screening method for generation of a synthetic microbial community: Case study with control of Fusarium wilt in pigeonpea. 一种新的合成微生物群落功能筛选方法——以防治鸽豌豆枯萎病为例。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-09-03 DOI: 10.1111/plb.70092

R Tyagi, S Srivastava, T K Raut, S Kartha, S Sharma

{"title":"A novel functional screening method for generation of a synthetic microbial community: Case study with control of Fusarium wilt in pigeonpea.","authors":"R Tyagi, S Srivastava, T K Raut, S Kartha, S Sharma","doi":"10.1111/plb.70092","DOIUrl":"https://doi.org/10.1111/plb.70092","url":null,"abstract":"Conventional methods to combat phytopathogens have ecological implications: chemical fertilizers pollute the environment, while bioinoculants are often inconsistent under field conditions. Microbiome-assisted rhizosphere engineering aims to re-structure the rhizosphere microbiome to promote plant growth and/or mitigate stress. This study employs a strategy based on rhizosphere engineering to combat stress caused by Fusarium udum in Cajanus cajan, by generating synthetic microbial communities (SMCs). We used a culture bank of indigenous bacterial strains belonging to the family Bacillaceae, isolated from the rhizosphere of C. cajan with biocontrol activity against Fusarium, and plant growth-promoting (PGP) properties. Various possible combinations of compatible strains were generated, followed by a novel iterative deconvolution technique to establish strains exhibiting enhanced biocontrol traits, when present in a community of other strains. A scoring scheme aided selection of strains for the SMCs, which were tested using in vitro and in planta experiments. Estimating growth attributes and stress markers in plants treated with constituted SMCs helped to select an SMC with maximum biocontrol potential against Fusarium wilt of pigeonpea. A robust SMC was generated with indigenous multi-trait plant growth promoting bacterial strains for sustainable mitigation of Fusarium induced biotic stress with proven efficacy in the host, C. cajan.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144991003","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

Elimination of FRDL1, a xylem-located citrate transporter, confers tolerance to excess unchelated ferrous iron through an exclusion mechanism in rice (Oryza sativa L.). FRDL1是一种位于木质部的柠檬酸转运蛋白，通过排除机制消除FRDL1，水稻（Oryza sativa L.）对过量未螯合铁的耐受性。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-09-02 DOI: 10.1111/plb.70107

Y Ueda

{"title":"Elimination of FRDL1, a xylem-located citrate transporter, confers tolerance to excess unchelated ferrous iron through an exclusion mechanism in rice (Oryza sativa L.).","authors":"Y Ueda","doi":"10.1111/plb.70107","DOIUrl":"https://doi.org/10.1111/plb.70107","url":null,"abstract":"Iron (Fe) toxicity is a common agricultural problem that limits rice yield in various regions of Southeast Asia and Africa. Previous studies have proposed physiological mechanisms for tolerance, but the specific genes associated with these mechanisms are largely unknown. In this study, I hypothesized that organic acids play a crucial role in Fe toxicity tolerance in rice and evaluated retrotransposon-insertion mutant lines of citrate transporters under Fe toxicity stress in hydroponics. Fe toxicity-induced leaf bronzing and Fe concentrations were measured. A knock-down line of the xylem-localized citrate transporter, FRDL1, had a significantly lower degree of leaf bronzing symptoms under Fe toxicity when unchelated ferrous iron (Fe2+, as FeSO4), but not chelated ferric iron (as Fe(III)-EDTA), was used as Fe source. The knock-down line of FRDL1 had lower Fe concentrations in leaf blades, while concentrations in stems and roots were unaffected under excess ferrous iron conditions. Knock-down of FRDL1 also reduced foliar Fe concentrations and leaf bronzing symptoms in Ciherang, an indica variety that is highly sensitive to Fe toxicity stress. This study highlights that low xylem citrate concentrations restrict translocation of excess Fe to leaves, suggesting a novel physiological aspect for improved Fe toxicity tolerance in rice. This study also suggests that selection of the Fe source is crucial in Fe toxicity experiments.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144937468","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

Linking environmental adaptation and genetic structure to the biogeography of flower colour lineages in Lysimachia monelli (Primulaceae). 报春花花色系的环境适应和遗传结构与生物地理学的联系。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-09-02 DOI: 10.1111/plb.70100

M Sánchez-Cabrera, F J Jiménez-López, P L Ortiz, M Talavera, E Narbona, M Arista

{"title":"Linking environmental adaptation and genetic structure to the biogeography of flower colour lineages in Lysimachia monelli (Primulaceae).","authors":"M Sánchez-Cabrera, F J Jiménez-López, P L Ortiz, M Talavera, E Narbona, M Arista","doi":"10.1111/plb.70100","DOIUrl":"https://doi.org/10.1111/plb.70100","url":null,"abstract":"Reproductive traits such as flower colour can have a profound influence on the diversification of plant species, making understanding their evolutionary ramifications one of the foremost challenges for evolutionary biologists. Lysimachia monelli is a Mediterranean endemic with two markedly divergent flower colour lineages, blue and orange, which do not coexist within the same populations. We examined the relationship between lineage divergence and environmental niche differentiation for the two lineages. Genetic relationships among individuals from 21 blue and six orange populations were assessed using seven nSSR markers. Environmental niche models were projected for the present and three past periods. Low gene flow between populations and elevated heterozygosity were pervasive across L. monelli populations. Western populations of both orange and blue lineages had higher genetic diversity than their eastern counterparts, with blue lineages displaying higher diversity than orange lineages. There was conspicuous genetic differentiation between colour lineages, and populations were aggregated into five nSSR clusters. Colour lineages occupied distinct environmental niches, with lineage-specific habitat suitability primarily influenced by variations in annual precipitation and solar radiation. Bioclimatic fluctuations in the region appear to have driven the divergence of L. monelli populations along a west-to-east gradient. The findings suggest comprehensive geographic and genetic separation of the two L. monelli colour lineages, suggesting an advanced stage of speciation.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144937429","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

Flower age increases male but not female performance through resource availability in a floral oil-producing species. 花龄通过资源利用率提高雄性而不是雌性的生产性能。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-09-01 DOI: 10.1111/plb.70094

A C Sabino-Oliveira, L T Carneiro, V L G Brito, I C Machado

{"title":"Flower age increases male but not female performance through resource availability in a floral oil-producing species.","authors":"A C Sabino-Oliveira, L T Carneiro, V L G Brito, I C Machado","doi":"10.1111/plb.70094","DOIUrl":"https://doi.org/10.1111/plb.70094","url":null,"abstract":"The high costs of floral maintenance modulate floral longevity. In some species with massive flowering and long floral lifespan, floral longevity increases overall display by changing petal colour, which ultimately counterbalances costs of floral maintenance. However, the colour of petals remains unchanged throughout the floral lifespan in some species with long floral longevity, and the reproductive consequences of such combined traits remain elusive. In this study, we investigated how flower age affects resource availability and reproduction in Stigmaphyllon paralias A. Juss. (Malpighiaceae), a floral oil-producing species in which petal colour does not change throughout its two-day longevity. We quantified petal colour properties (spectral purity, brightness, chromatic contrast with the background, and saturation), resource availability for pollinators, and female and male reproductive performances over the lifespan of 180 flowers exposed or isolated from pollinators. Despite petal saturation decreasing throughout the floral lifespan, the colour hexagon model predicts no perceptual colour change in flowers isolated or exposed to bee pollinators. However, pollen release and oil loss increase over the floral lifespan, while the amount of pollen on stigmas did not change. These results suggest that the maintenance of floral colour in the vision of bees may be related to increased male performance.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144937476","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

Xylem morphology influences lemon susceptibility to mal secco disease. 木质部形态影响柠檬对仙人掌病的易感性。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-09-01 DOI: 10.1111/plb.70096

C Catalano, M Di Guardo, M Cortese, M Caruso, S La Malfa, G Distefano, A Gentile

{"title":"Xylem morphology influences lemon susceptibility to mal secco disease.","authors":"C Catalano, M Di Guardo, M Cortese, M Caruso, S La Malfa, G Distefano, A Gentile","doi":"10.1111/plb.70096","DOIUrl":"https://doi.org/10.1111/plb.70096","url":null,"abstract":"In plants, xylem is directly involved in conveyance of water and dissolved minerals, mechanical support of the plant, and tolerance to drought stress. Moreover, for several fruit crops affected by vascular diseases, an association between the morphology of xylem vessels and susceptibility was described. In fact, compartmentalization represents a key determinant mechanism of plant resistance to vascular infections. Mal secco is a severe tracheomycosis affecting many citrus species of relevant economic importance. Currently, both chemical and agronomic measures are not sufficient to contain the diffusion of the pathogen raising the interest for the elucidation of the host tolerance mechanism against mal secco. This study investigated the constitutive morphology of xylem tissue, in terms of vessel diameter and vessel density in 28 citrus genotypes, all characterized by a different degree of tolerance/susceptibility towards the disease. One-year-old stems, in three replicates per each genotype, were cut into 50-μm sections and observed under an optical microscope after staining in safranine-O. Analysis revealed a positive correlation between xylem vessel density and susceptibility to mal secco disease. These findings suggest that the constitutive morphology of xylem tissue could play a role in tolerance to mal secco, even though other mechanisms, both at histological and biochemical level, need to be unlocked and better elucidated.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144937383","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

"Bud to bloom"-hormonal coordination in floral initiation. “从芽到花”——花形成过程中的激素协调。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-08-25 DOI: 10.1111/plb.70089

R Baral, A Vainer, S Melzer, B Hause, S Panda

引用次数: 0

Duckweeds: Model organisms for research on plant sterols and steroids. 浮萍：研究植物固醇和类固醇的模式生物。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-08-25 DOI: 10.1111/plb.70095

J Klein, K-J Appenroth, K S Sree

引用次数: 0

Temporal partitioning of pollination and seed dispersal interactions in two sympatric mistletoes. 两种同域寄生槲寄生授粉和种子传播相互作用的时间分异。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-08-21 DOI: 10.1111/plb.70091

V Vilches-Gómez, J I Orellana, G C Amico, F E Fontúrbel

{"title":"Temporal partitioning of pollination and seed dispersal interactions in two sympatric mistletoes.","authors":"V Vilches-Gómez, J I Orellana, G C Amico, F E Fontúrbel","doi":"10.1111/plb.70091","DOIUrl":"https://doi.org/10.1111/plb.70091","url":null,"abstract":"Mistletoes are aerial parasitic plants that play a key role in forest ecosystems, promoting biodiversity by providing food and microhabitats for many animals. Here, we assessed interaction partitioning on two sympatric species of mistletoes (Tristerix aphyllus and Tristerix verticillatus), which coexist in a semi-arid environment. Tristerix aphyllus is a holoparasitic mistletoe specialized on cacti, while T. verticillatus is hemiparasitic and parasitizes a wider variety of trees and shrubs. We used camera traps to conduct a 2-year survey of the interactions of T. aphyllus and T. verticillatus with their mutualists: the pollinator Sephanoides sephaniodes and the seed disperser Mimus thenca, two generalist bird species that largely rely on these mistletoes. We analysed plant phenology, annual and daily activity patterns of S. sephaniodes and M. thenca, and the seasonal effects of temperature on visitation rates. Both mistletoe species have overlapping flowering and fruiting seasons, resulting in complex interactions with their main mutualists. Furthermore, daily and annual activities of S. sephaniodes and M. thenca overlapped in both mistletoe species, depending on the phenological stage of the mistletoes. Our results highlight the importance of phenological overlap for mutualistic interactions, as sympatric species with similar phenologies tend to provide more floral and fruit resources for mutualistic animals, thereby reinforcing the ecological dynamics of these communities.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144937442","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

Elevated photosynthetic potential in Polylepis reticulata trees from the Andean tree line. 安第斯乔木系网麻树的光合势升高。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-08-20 DOI: 10.1111/plb.70090

A Carabajo-Hidalgo, D Nadal-Sala, H Asbjornsen, P Crespo, H Hampel, S Sabaté

{"title":"Elevated photosynthetic potential in Polylepis reticulata trees from the Andean tree line.","authors":"A Carabajo-Hidalgo, D Nadal-Sala, H Asbjornsen, P Crespo, H Hampel, S Sabaté","doi":"10.1111/plb.70090","DOIUrl":"https://doi.org/10.1111/plb.70090","url":null,"abstract":"Polylepis reticulata is a vulnerable Andean páramo endemic tree species that grows at the highest altitude in the world. Despite having abundant available water year-round, P. reticulata trees face extreme environmental conditions, namely low temperatures and frequent persistent clouds and fog, which create extremes of solar irradiance. Yet little is known about how its photosynthetic apparatus adapts to this extreme environment because of Ecuadorian páramo's inaccessibility and paucity of previous research. We collected twigs and measured photosynthesis response curves with a Li-Cor LI-6400XT portable photosynthesis system and a LI-6400-40 Leaf Chamber Fluorometer. We characterized photosynthetic potential according to the Farquhar model, as well as stomatal behaviour and water management strategy. Photosynthesis of P. reticulata saturates at relatively low PAR (340-730 μmol m-2 s-1). Additionally, the high Rubisco carboxylation kinetics (Vcmax25 = 83.1 μmol m-2 s-1 [73.5-92.7 95% CI]) indicate elevated photosynthetic potential. The low carbon gain per unit water transpired suggests a profligate water use strategy (g1 = 4.38 ± 0.11). Together, these results suggest that P. reticulata has a highly efficient photosynthetic apparatus with relatively weak stomatal control, taking advantage of the rare high radiation in the páramo and adapting to an energy-limited, rather than water-limited, environment.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144937401","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