Journal of Plant Research最新文献_第2页

New insights into pollen release and presentation in legumes: the case of Myroxylon peruiferum, a papilionoid with non-papilionaceous flowers. 豆科植物花粉释放和表现的新认识：以一种具有非凤蝶花的类凤蝶为例。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-05-01 Epub Date: 2025-03-28 DOI: 10.1007/s10265-025-01629-5

Viviane Gonçalves Leite, Vidal Freitas Mansano, Simone Pádua Teixeira

{"title":"New insights into pollen release and presentation in legumes: the case of Myroxylon peruiferum, a papilionoid with non-papilionaceous flowers.","authors":"Viviane Gonçalves Leite, Vidal Freitas Mansano, Simone Pádua Teixeira","doi":"10.1007/s10265-025-01629-5","DOIUrl":"10.1007/s10265-025-01629-5","url":null,"abstract":"The species-rich legume family displays diverse mechanisms for pollen presentation and release, including brush, piston, valvular, and explosive types, influenced by variations in floral architecture. Among papilionoids, a group characterized by flag-flowers, early-branching species often deviate from this typical pattern. This study investigates Myroxylon peruiferum L.f., an early-branching papilionoid legume native to the Brazilian Atlantic Forest, with non-papilionaceous flowers. Through detailed macromorphological, anatomical, histochemical, and ultrastructural analyses of floral organs, we reveal new insights into pollen release and presentation mechanisms in legumes. Pollen is released through an unusual process: the anther opens via an apical wide slit that gradually extends toward the base, releasing pollen in stages. Ducts in the sepals, petals, ovary, and anther secrete translucent oleoresin droplets that harden when released into the external environment. These serve multiple functions, including enhancing flower visibility, facilitating secondary pollen presentation by attaching pollen to the anther apex and petal tips, and acting as olfactory attractants due to their terpene content. M. peruiferum presents several unique traits not previously described in this subclade, including (a) oleoresin overflow through anther pores, (b) uncommon rimose anther dehiscence, and (c) a novel form of secondary pollen presentation via oleoresin drops. These findings provide important new insights into the reproductive strategy of this species and offer broader implications for legume biology.","PeriodicalId":16813,"journal":{"name":"Journal of Plant Research","volume":" ","pages":"469-482"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143743048","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

The variation of summer heat resistance was associated with leaf transpiration rate in relatively large-leaf Rhododendron plants in southwest China. 西南地区大叶杜鹃花夏季耐热性的变化与叶片蒸腾速率有关。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-05-01 Epub Date: 2025-02-08 DOI: 10.1007/s10265-025-01620-0

Hai-Xia Zhang, Huie Li

{"title":"The variation of summer heat resistance was associated with leaf transpiration rate in relatively large-leaf Rhododendron plants in southwest China.","authors":"Hai-Xia Zhang, Huie Li","doi":"10.1007/s10265-025-01620-0","DOIUrl":"10.1007/s10265-025-01620-0","url":null,"abstract":"The summer heat is a vital factor limiting the introduction of relatively large-leaf Rhododendron plants to low-altitude areas, making it crucial to evaluate the resistance of different germplasm to summer heat. A pot experiment was conducted in 2023 to investigate the temporal changes in the photosynthetic characteristics, physiological and biochemical characteristics, and chlorophyll fluorescence characteristics of 14 representative relatively large-leaf Rhododendron germplasm. The results showed the R. irroratum and 'Hotspur Red' exhibited the highest heat damage index (HDI), while R. jiulongshanense and 'Moser Maroon' had the lowest HDI among the 14 Rhododendron germplasm. The photosynthesis rate and Fv/Fm (maximum photochemical efficiency) initially decreased and then recovered in all germplasm except R. irroratum. In contrast, the leaf transpiration rate, stomatal conductance, and chlorophyll content gradually increased. Hydrogen peroxide concentration first decreased and then increased, while malondialdehyde concentration initially increased and then decreased. Additionally, the superoxide anion content gradually increased. The activities of superoxide dismutase, peroxidase, and catalase (CAT) initially increased and then decreased. The HDI was positively correlated with CAT activity (r = 0.28, P < 0.05) but negatively correlated with photosynthesis rate (r = -0.26, P < 0.05), leaf transpiration rate (r = -0.27, P < 0.05), and Fv/Fm (r = -0.43, P < 0.001). Variation in summer heat resistance, as indicated by HDI, was observed among the 14 Rhododendron germplasm. This heat resistance was mainly associated with leaf transpiration rate and Fv/Fm. The indirect role of antioxidant enzymes in maintaining reactive oxygen species homeostasis in summer heat resistance was observed. The results provide a reference for introducing and cultivating relatively large-leaf Rhododendron plants to low-altitude areas.","PeriodicalId":16813,"journal":{"name":"Journal of Plant Research","volume":" ","pages":"433-446"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143374223","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

Wasp pollination and pollinator filtering by dense hairs at the floral tube entrance in Marsdenia tinctoria (Apocynaceae). 夹竹桃科花管入口处密毛对黄蜂授粉和传粉者的过滤作用。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-05-01 Epub Date: 2025-02-20 DOI: 10.1007/s10265-025-01621-z

Ko Mochizuki, Ayako Watanabe-Taneda

{"title":"Wasp pollination and pollinator filtering by dense hairs at the floral tube entrance in Marsdenia tinctoria (Apocynaceae).","authors":"Ko Mochizuki, Ayako Watanabe-Taneda","doi":"10.1007/s10265-025-01621-z","DOIUrl":"10.1007/s10265-025-01621-z","url":null,"abstract":"The physical filtering of pollinators is an important factor influencing pollination effectiveness. This study explored the potential functions of dense hairs that completely obstruct the entrance of floral tube in Marsdenia tinctoria by characterizing the flowers of this species, as well as its pollinators and their behavior. The corolla was white upon blooming in the morning, then turned yellow at night, and the flower finally dropped by the third morning. The hairs tended to be disheveled in yellow-petaled flowers. Pollination success increased with floral age. Direct observations of flowers in natural M. tinctoria populations over a period of 32 h recorded 126 visitors, of which 70% were wasps. We observed pollinia attached to the mouthparts of wasps, carpenter bees, and honeybees, but not to those of butterflies, moths, flies, or ants. Detailed examination of insect mouthparts and floral morphology indicated that insect visitors that acted as pollinators had mouthparts longer than the floral tubes, equipped with hairs to which pollinia could attach. The mouthparts of potter wasps were often covered with pollinaria, carrying on average 30-75 pollinia. The dense floral hairs were penetrated by large-bodied visitors, and blocked smaller visitors. Disturbance of these floral hairs allowed smaller insects to access nectar, suggesting that the hairs function in preventing nectar theft by smaller insects. This study presents the first case of wasp pollination in the genus Marsdenia and provides insights into the potential function of its dense floral hairs, a synapomorphy of this genus, in filtering floral visitors.","PeriodicalId":16813,"journal":{"name":"Journal of Plant Research","volume":" ","pages":"447-457"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12062159/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143468348","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

Needle/electrode insertion device for measuring plant electrical signals. 用于测量植物电信号的针/电极插入装置。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-05-01 Epub Date: 2025-03-04 DOI: 10.1007/s10265-025-01625-9

Miguel Ángel García Servín, Amanda Kim Rico Chávez, Magdalena Mendoza Sánchez, José Alfredo Acuña García, Ramón Gerardo Guevara González, Luis Miguel Contreras Medina

{"title":"Needle/electrode insertion device for measuring plant electrical signals.","authors":"Miguel Ángel García Servín, Amanda Kim Rico Chávez, Magdalena Mendoza Sánchez, José Alfredo Acuña García, Ramón Gerardo Guevara González, Luis Miguel Contreras Medina","doi":"10.1007/s10265-025-01625-9","DOIUrl":"10.1007/s10265-025-01625-9","url":null,"abstract":"Plants generate electrical signals in response to mild and severe environmental stimuli to transmit physiological information and ultimately trigger defensive responses during stressful events. It has been proposed that detecting and characterizing such signals could allow researchers to mimic specific electrical stimuli and provoke desirable responses in crops. Nevertheless, manually inserting electrodes in plant tissues leads to irregular data records due to a lack of uniformity across insertion events. For this reason, we manufactured a prototype of an electrode/needle insertion device built in aluminum and acrylic and used it to measure electrical signals in C. annuum plants. As a result, the device had more consistent insertion characteristics such as depth and alignment between electrodes and with plant stems. The device was also used to obtain electrical signals and compare them with the signals obtained using the traditional insertion technique, demonstrating that the use of the device promotes stability and repeatability in the captured signals.","PeriodicalId":16813,"journal":{"name":"Journal of Plant Research","volume":" ","pages":"525-531"},"PeriodicalIF":2.7,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143557267","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

Non-radiative origin for alpine endemics of Draba (Brassicaceae) in the central mountains of the Japanese Archipelago. 日本群岛中部山区高山特有的苔科植物的非辐射起源。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-04-29 DOI: 10.1007/s10265-025-01643-7

Ryutaro Koda, Yoshinori Murai, Hajime Ikeda

{"title":"Non-radiative origin for alpine endemics of Draba (Brassicaceae) in the central mountains of the Japanese Archipelago.","authors":"Ryutaro Koda, Yoshinori Murai, Hajime Ikeda","doi":"10.1007/s10265-025-01643-7","DOIUrl":"https://doi.org/10.1007/s10265-025-01643-7","url":null,"abstract":"Diversity of endemic species may result from two evolutionary processes: in-situ diversification (radiation) or phylogenetically independent divergences (non-radiation). To explore the evolutionary history of endemic-rich alpine flora in the Japanese Archipelago, we investigated the phylogenetic relationships of four endemic taxa of Draba (Brassicaceae) from the high mountains of central Honshu: D. kitadakensis, D. sachalinensis var. shinanomontana, D. sakuraii var. nipponica, and D. shiroumana. Using molecular phylogenetic analyses on plastid trnL-F and nuclear ITS sequence of 157 taxa, we found that the four taxa endemic to central Honshu did not form a monophyletic group and diverged from at least two evolutionary independent lineages. Moreover, ancestral area reconstruction further revealed that some of their ancestral species may have originated from different geographical regions. These findings indicate that the endemic Draba in central Honshu diverged through non-radiative evolutionary origin. Our study suggests that the richness of endemic species in the alpine zone of the Japanese Archipelago is associated with multiple sources with high species diversity located in nearby geographical regions.","PeriodicalId":16813,"journal":{"name":"Journal of Plant Research","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144064100","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

Tetracentron (Trochodendraceae) in the Paleocene and Miocene of western North America. 北美西部古新世和中新世的四棱蕨。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-04-28 DOI: 10.1007/s10265-025-01636-6

Steven R Manchester

引用次数: 0

Aeluropus lagopoides: an important halophyte with key physiological and molecular mechanisms for salinity tolerance and a unique genetic resource for developing climate resilient crops. lagopoides是一种重要的盐生植物，具有关键的耐盐生理和分子机制，是培育气候适应型作物的独特遗传资源。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-04-28 DOI: 10.1007/s10265-025-01640-w

Pradeep K Agarwal, Parinita Agarwal, Anjali Chittora, Adarsh Bhawsar, Treesa Thomas

引用次数: 0

Over-compensation of the native herb Qiai (Artemisia argyi var. argyi cv. Qiai) to infection with alien field dodder (Cuscuta campestris). 乡土植物羌艾（Artemisia argyi var. argyi cv.）的过度补偿。Qiai)感染外星野菟丝子（Cuscuta campestris）。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-04-25 DOI: 10.1007/s10265-025-01639-3

Xin Yu, Tong Wu, Wei-Bin Wang, Tian-Yu Ma, Qiu-Yu Ma, Jia-Ying Zhang, Jia-Liang Zhang

{"title":"Over-compensation of the native herb Qiai (Artemisia argyi var. argyi cv. Qiai) to infection with alien field dodder (Cuscuta campestris).","authors":"Xin Yu, Tong Wu, Wei-Bin Wang, Tian-Yu Ma, Qiu-Yu Ma, Jia-Ying Zhang, Jia-Liang Zhang","doi":"10.1007/s10265-025-01639-3","DOIUrl":"https://doi.org/10.1007/s10265-025-01639-3","url":null,"abstract":"Compensatory growth of crops is argued to alleviate detrimental parasitic effects. Cuscuta campestris causes severe crop losses worldwide, and is the most important parasitic weed. In a two-year consecutive field investigation, C. campestris was found on Artemisia argyi var. argyi cv. Qiai, one traditional medicinal herb with a long cultivation history in Qizhou, China. In 2020, anatomical validation was conducted on haustorial connection, and competition between carbon (C) and nitrogen (N) in this parasitic system was quantified with isotope signature (δ13C, δ15N) at five sites in 2021. Across sites, leaf senescence of low canopy of infected Qiai was greatly accelerated. Enhancement of resource remobilization from aging leaves (emerging source) mainly supported growth of the parasite (additional sink) also host stem, Qiai successfully abstained intense resource competition with C. campetris, and both species had similar δ13C and δ15N. A new source-sink balance re-established between the parasite and host. Infected Qiai held relatively steady canopy C fixation (constant photosynthetic N use efficiency, biomass and N concentration of green leaves), and branched in top canopy markedly, increasing light access. Together, Qiai appeared to enhance canopy C gain in response to infection. Increase in δ13C in this parasite-host association was mild. Finally, this parasite evidently over-stimulated the aboveground biomass of its host, irrespective of infection density and load, and was left behind. This study first reported C. campestris on Qiai, and the latter species execute over-compensation in the field.","PeriodicalId":16813,"journal":{"name":"Journal of Plant Research","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143998063","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

Androecium homologies in eight-staminate maples: a developmental study. 八雄蕊槭树雄蕊同源性的发育研究。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-04-25 DOI: 10.1007/s10265-025-01641-9

Alexander E Zavialov, Margarita V Remizowa

{"title":"Androecium homologies in eight-staminate maples: a developmental study.","authors":"Alexander E Zavialov, Margarita V Remizowa","doi":"10.1007/s10265-025-01641-9","DOIUrl":"https://doi.org/10.1007/s10265-025-01641-9","url":null,"abstract":"The genus Acer belongs to the family Sapindaceae, whose representatives are characterized by a pentamerous perianth but typically possess only eight stamens. Such an androecium is believed to have evolved through the loss of two stamens. However, there is still no consensus on the origin of eight-staminate androecium including the positions of the two lost stamens and the pathway of their reduction compared to other Sapindaceae. We examined the early stages of flower development in five maple species belonging to different sections - four species with eight stamens and one species with ten stamens - using scanning electron microscopy. Measurements were performed to analyze the relative positions of stamen primordia, their size, and the floral meristem surface area. In addition, the perianth and androecium vasculature was studied to reveal petal-stamen complexes. We found that in three of four 8-staminate species, three stamens are initiated from common petal-stamen primordia, and five arise from single primordia. In A. tegmentosum Maxim., four stamens appear from common primordia with petals, and four from single primordia. Despite developmental differences, stamen distribution within the flower and the angles between adjacent stamens indicate a similar androecium construction in all species. In most species with eight stamens, the differences between two andoecial whorls have vanished. In contrast, A. nikoense (Miq.) Maxim., with ten stamens, possesses two distinct stamen whorls, the antepetalous stamens are initiated from common primordia. In the 8-staminate androecia of the genus Acer, the same two stamens have been lost as in other Sapindaceae. Within genus Acer, there is a certain decrease in the relative size of the floral meristem, accompanied by an increase in the number of common petal-stamen primordia and increased heterogeneity of the androecium (in A. tegmentosum) or reduction of some floral organs.","PeriodicalId":16813,"journal":{"name":"Journal of Plant Research","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143999991","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

Effects of suppression of phosphate transporter 4;4 on CO₂ assimilation in rice. 抑制磷酸转运体4；4对水稻CO2同化的影响。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-04-18 DOI: 10.1007/s10265-025-01638-4

Ryosei Harada, Takaya Sugimoto, Yuki Takegahara-Tamakawa, Amane Makino, Yuji Suzuki

{"title":"Effects of suppression of phosphate transporter 4;4 on CO2 assimilation in rice.","authors":"Ryosei Harada, Takaya Sugimoto, Yuki Takegahara-Tamakawa, Amane Makino, Yuji Suzuki","doi":"10.1007/s10265-025-01638-4","DOIUrl":"https://doi.org/10.1007/s10265-025-01638-4","url":null,"abstract":"Homeostasis of inorganic phosphate (Pi) in the chloroplasts is essential for healthy CO2 assimilation. When Pi in chloroplasts is insufficient, the increase in the CO2 assimilation rate (A) with an increase in CO2 level is restricted, whereas A per unit total protein level moderately decreases under low-to-normal CO2 levels. Some phosphate transporters (PHT) are localized in the chloroplast envelope; however, their contribution to the maintenance of Pi homeostasis for CO2 assimilation has rarely been reported. In this study, we generated transgenic rice plants with RNAi-suppressed PHT4;4, one of the two genes of chloroplast envelope-localized PHT, and examined the changes in the characteristics of CO2 assimilation. In three transgenic lines, the mRNA levels of PHT4;4 decreased by approximately 80% without a notable decrease in total leaf-P levels or total leaf-N levels, which is thought to approximately correspond to total protein levels. A in the transgenic plants tended to be slightly lower than that in the wild-type plants, irrespective of the CO2 level, and typically increased to saturation with increasing CO2 levels. A per unit total leaf-N level in transgenic plants tended to be slightly lower than that in wild-type plants. These results indicate that substantial PHT4;4 suppression caused slight symptoms of Pi-limited CO2 assimilation. Therefore, PHT4;4 is suggested to be involved in the maintenance of chloroplast Pi homeostasis for healthy CO2 assimilation, although its contribution is minor.","PeriodicalId":16813,"journal":{"name":"Journal of Plant Research","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144064069","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