Brazilian Journal of Botany最新文献

{"title":"Taxonomic implications of the leaf anatomy of twelve species of Senna ser. Bacillares (Leguminosae) from northeastern Brazil","authors":"Flávio Sousa Souto, Anauara Lima e Silva, Edinalva Alves Vital dos Santos, Maria de Fátima Agra","doi":"10.1007/s40415-024-01024-9","DOIUrl":"https://doi.org/10.1007/s40415-024-01024-9","url":null,"abstract":"<p><i>Senna</i> ser. <i>Bacillares</i> is a Neotropical group with about 50 species, being the largest and taxonomically more complex series of <i>Senna</i>. The leaf anatomy of twelve species of <i>Senna</i> ser. <i>Bacillares</i> (Leguminosae) from northeastern Brazil was examined to investigate the importance of anatomical characters in delimiting species within the series. Forty-three specimens were analyzed using light microscopy, following the usual techniques in plant anatomy. Four different petiole profiles were observed: circular, semicircular, hexagonal, and pentagonal; most petioles showed adaxial projections, those being strongly prominent in <i>S. chrysocarpa</i> and <i>S. quinquangulata</i> var. <i>quinquangulata</i>. Six different leaf rachis profiles were observed: pentagonal, elliptic, obovate, circular, semicircular, and irregularly triangular. The vascular systems of the petioles and leaf rachis showed similar patterns, with 4–7 central beams and two accessories. The midrib was plane-convex with an arched vascular bundle. The dorsiventral mesophyll has uniseriate palisade parenchyma, and 4–7-seriate spongy parenchyma. Five different leaflet edges outlines were observed: rounded, recurved, acute, acuminate, and truncate; the truncate and acuminate types were exclusive to <i>S. angulata</i> var. <i>miscadena</i> and <i>S. gardneri</i>, respectively. The dendrogram generated by cluster analysis showed the formation of two groups differentiated by the presence/absence of trichomes on the petiole and leaf rachis, and by the outline of the petiole. An identification key, based on morphoanatomical characters, is presented. Anatomical characters like the contour and number of vascular bundles of the petiole and leaf rachis, and shape of leaflet edges, provided additional support to the taxonomy of species of <i>Senna</i> ser. <i>Bacillares</i>, reinforcing the importance of anatomical studies to the taxonomy and systematics of Leguminosae.</p>","PeriodicalId":9140,"journal":{"name":"Brazilian Journal of Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141743670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Publisher Correction to: Reassessing the taxonomy of the Libidibia ferrea complex, the iconic Brazilian tree “pau-ferro” using morphometrics and ecological niche modeling","authors":"Filipe G. Oliveira, Felipe da S. Santos, Gwilym P. Lewis, Reyjane P. de Oliveira, Luciano P. de Queiroz","doi":"10.1007/s40415-024-01020-z","DOIUrl":"https://doi.org/10.1007/s40415-024-01020-z","url":null,"abstract":"","PeriodicalId":9140,"journal":{"name":"Brazilian Journal of Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141719923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling the reproduction of Proteopsis argentea (Asteraceae): how the complex pollination system might influence its conservation status","authors":"João Paulo Raimundo Borges, Ilmara Aparecida Oliveira Ferreira, Danubia Natalina Silva, Cinthia Soares Novaes, Ana Carolina Pereira Machado, Gudryan Jackson Baronio, Leonardo Ré Jorge, André Rodrigo Rech","doi":"10.1007/s40415-024-01025-8","DOIUrl":"https://doi.org/10.1007/s40415-024-01025-8","url":null,"abstract":"<p>The reproductive success of organisms depends on the positive and negative interactions it establishes throughout its lifetime. Pollinators and mutualists increase adaptive value, while herbivory and antagonism impair plant performance. Asteraceae flowers, simultaneously interacting with pollinators, herbivores and parasitoids with the same structure (the flower head), serve as a model for studying these interactions. In this work we describe the multi-layered interactions between <i>Proteopsis argentea,</i>, its pollinators, endophagous herbivores and parasitoids, aiming to understand how they influence the plant's reproductive success and whether these processes are associated with its conservation status as vulnerable. We found that <i>P. argentea</i> produces little, but highly energetic nectar, acting in interactions with bees, hummingbirds and lepidopterans in a generalist pollination system. Antagonistic interactions were much less diverse, dominated by <i>Xanthaciura</i> aff. <i>chrysura</i>. In addition, two morphospecies of parasitoid wasps used the flower heads of <i>P. argentea</i>, and may have a negative impact on antagonists. We also found that <i>P. argentea</i> presents a reproductive insurance strategy, via autogamy, producing seeds without pollinators. The flowers of <i>P. argentea</i> seem to act as efficient filters, promoting interactions with potential pollinators and parasitoids and limiting interaction with endophagous herbivores. The reproductive strategies of <i>P. argentea</i>, with an apparently efficient floral filter and reproductive insurance in the absence of pollinators, seems to indicate that reproduction is not a limiting factor for the species. Thus, for its conversation, measures ensuring the protection of its occurrence area should be prioritized.</p>","PeriodicalId":9140,"journal":{"name":"Brazilian Journal of Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141610135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transcriptome analysis reveals the role of temperature in seed germination of Idesia polycarpa Maxim through the integration of phytohormones and sugar metabolism","authors":"Mengxing Zhang, Sohel Rana, Chengzhe Li, Xiaoxue Zhang, Kaixin Tian, Zhen Liu, Zhi Li, Li Dai, Xiaodong Geng, Yanmei Wang","doi":"10.1007/s40415-024-01027-6","DOIUrl":"https://doi.org/10.1007/s40415-024-01027-6","url":null,"abstract":"<p>The germination of <i>Idesia polycarpa</i> Maxim seeds plays a critical role in successfully cultivating this dioecious species. In order to reveal the mechanisms regulating the germination of <i>I. polycarpa</i> seeds under variable temperature environments, a comparative analysis of the phenotype information and genetic changes before and after germination of the seeds was conducted. Using the paraffin section method, morphological and structural changes were observed at three developmental stages—seed coat cracking (CK), emergence (SE), and radicle elongation (RE). The study also evaluated the relationship between morphological structure variation and the dynamics of endogenous hormones. In addition, three sets of transcriptome data were obtained using high-throughput sequencing technology and analyzed to screen for differential gene function during seed germination. The study found that most seeds effectively released from dormancy after treatment at 5 ℃ for 60 days and the highest germination rate at the variable temperature (15 ℃/25 ℃ for 12 h) environment. The gene ontology (GO) revealed that 26,578 differentially expressed genes (DEGs) were annotated into 52 subclasses under three major classifications: biological processes, molecular functions, and cellular components. KEGG functional classification revealed that 1,764 DEGs were present at different stages of seed germination. <i>I. polycarpa</i> seed germination is achieved by up-regulation of genes related to phenylpropane biosynthesis, phytohormone signaling, flavonoid biosynthesis, photosynthesis, starch and sucrose metabolism, and down-regulation of genes related to ribosomes. Analysis of differential genes at different stages of seed germination in <i>I. polycarpa</i> revealed that 34 differential genes were closely related to seed embryo growth and development, cell wall structure, and endosperm weakening. The RT-qPCR was used to verify the reliability and accuracy of six genes closely related to the seed germination of <i>I. polycarpa</i>. The results indicate that multiple phytohormones, starch, and sugar metabolism coordinately mediate seed germination in <i>I. polycarpa</i>. Further research is required to investigate the potential roles of certain genes in the seed germination of this species.</p>","PeriodicalId":9140,"journal":{"name":"Brazilian Journal of Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141610133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PCR compatible miniprep DNA isolation in rice using microwave and dry bath based heating devices","authors":"Dip Pal, Narottam Dey","doi":"10.1007/s40415-024-01023-w","DOIUrl":"https://doi.org/10.1007/s40415-024-01023-w","url":null,"abstract":"<p>An effective and fast miniprep DNA protocol is on demand among plant molecular biologist where two moderns heating devices (microwave and dry bath) may be adopted in place of conventional water bath which is time consuming and sometimes result in microbial contamination. Though most of the present-day modern laboratories are equipped with these two recent heating devices, very limited reports are available using these two devices for isolation of high-quality plant genomic DNA with desirable quantity. Addressing this demand, in present study an earlier adopted DNA isolation protocol was re-standardized on different rice tissue lines seedlings, leaves, stem and root with the inclusion of microwave and dry bath particularly for the duration and applied temperature during heating followed by comparing with popularly used protocol for yield and quality of the isolated genomic DNA through standard statistical analysis. Pair- wise t test unable to detect any significant differences (for both quality and quantity) between the earlier standardized protocol with the two newly standardized protocol (adopted with microwave and dry bath) for the isolated genomic DNA from the different plant tissues included. The isolated genomic DNA was amplified through PCR followed by resolving through agarose gel electrophoresis to confirm their PCR compatibility.</p>","PeriodicalId":9140,"journal":{"name":"Brazilian Journal of Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141520959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sorgoleone unveiled: exploring its biosynthesis, functional perspectives and applications","authors":"Isabela Figueiredo de Oliveira, Talita Camargos Gomes, Maria Lucia Ferreira Simeone, Decio Karam, Sylvia Morais de Sousa Tinoco","doi":"10.1007/s40415-024-01026-7","DOIUrl":"https://doi.org/10.1007/s40415-024-01026-7","url":null,"abstract":"<p>Sorghum’s ability to exhibit allelopathy is linked to the secretion of lipophilic exudates from its roots. Sorgoleone, a member of the quinone class, constitutes a substantial part of these exudates. While studies typically focus on testing the exudate or crude extract, other compounds are also present, although in lesser quantities. Initially suspected molecular target sites affected by sorgoleone include photosynthetic and mitochondrial electron transport processes, along with <i>p</i>-hydroxyphenylpyruvate dioxygenase. Despite acting as a Photosystem II inhibitor in isolated chloroplasts, its impact on overall photosynthesis remains uncertain. Proposed mechanisms suggest inhibition of root H⁺-ATPase activity and water uptake, but questions persist regarding sorgoleone’s absorption, transportation to the shoot, and entry into chloroplasts. The spatial separation between sorgoleone exudation and its presumed site of action presents a notable challenge. This review delves into the characteristics and effects of sorgoleone, critically assessing its role in allelopathy. Furthermore, it explores the role of sorgoleone in signaling to facilitate the establishment of a symbiotic relationship between plants and arbuscular mycorrhizal fungi, as well as its impact on the microbiota. However, key questions regarding its mode of action, specific activity and selectivity, bioactive concentration, persistence and release in the rhizosphere, as well as its absorption and translocation, remain to be fully elucidated.</p>","PeriodicalId":9140,"journal":{"name":"Brazilian Journal of Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141529801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Protoderm versus fundamental meristem origin of the fiber strands in cyperaceae: terminology implications","authors":"Danielle Aparecida Schinemann, Shirley Martins Silva","doi":"10.1007/s40415-024-01019-6","DOIUrl":"https://doi.org/10.1007/s40415-024-01019-6","url":null,"abstract":"","PeriodicalId":9140,"journal":{"name":"Brazilian Journal of Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141360070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative analysis of the complete chloroplast genome of endemic Colchicum baytopiorum CD. BRICKELL","authors":"Hande Morgil, Okan Unlu, Kadir Boztas, Isil Tulum, Gül Oz","doi":"10.1007/s40415-024-01021-y","DOIUrl":"https://doi.org/10.1007/s40415-024-01021-y","url":null,"abstract":"","PeriodicalId":9140,"journal":{"name":"Brazilian Journal of Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141365459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wood anatomy of Tabaroa, a monotypic papilionoid legume genus narrowly endemic to the Brazilian Caatinga seasonally dry tropical forests","authors":"Marcelo dos Santos Silva, Daisy Burris, Cássia Sacramento, Lazaro Benedito da Silva, Domingos Cardoso","doi":"10.1007/s40415-024-01022-x","DOIUrl":"https://doi.org/10.1007/s40415-024-01022-x","url":null,"abstract":"","PeriodicalId":9140,"journal":{"name":"Brazilian Journal of Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141361233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phytotoxicity of glycosylated flavonols extracted from Annona coriacea (Annonaceae) on germination and initial growth of standard target species and an invasive grass","authors":"Paula Novaes, Jenifer de Carvalho Lopes, Marcelo J. Pena Ferreira, Deborah Yara Alves Cursino dos Santos","doi":"10.1007/s40415-024-01018-7","DOIUrl":"https://doi.org/10.1007/s40415-024-01018-7","url":null,"abstract":"<p><i>Annona coriacea</i> Mart. is a Brazilian native species whose phytotoxicity was described, although there is no data about the compounds responsible for it. The aim of this study was bioprospecting <i>A. coriacea</i> in relation to phytotoxicity on the elongation of wheat coleoptiles and on germination of diaspores and initial growth of seedlings of standard target species (lettuce and tomato) and a weed (<i>Urochloa decumbens</i> (Stapf) R.D. Webster). For that, ethanolic extract of of <i>A. coriacea</i> was fractionated affording 9 fractions, which were assayed on elongation wheat coleoptiles. Group G showed the highest inhibitory results and thus, was subjected to chromatographic separation furnishing the isolation of 11 flavonols: <b>1</b>—Quercetin-3-<i>O</i>-gentiobioside, <b>2</b>—Quercetin-3-<i>O</i>-robinobioside, <b>3</b>—Rutin, <b>4</b>—Hyperin, <b>5</b>—Isoquercitrin, <b>6</b>—Biorobin, <b>7</b>—Nicotiflorin, <b>8</b>—Keioside, <b>9</b>—Narcissin, <b>10</b>—Cacticin and <b>11</b>—Isorhamnetin-3-<i>O</i>-glucoside. This is the first report of wheat coleoptile bioassay to all these compounds and it is also the first phytotoxicity results for <b>1</b>, <b>2</b>, <b>6</b>, <b>8</b> and <b>10</b>. Compounds <b>5</b>, <b>7</b> and <b>11</b> showed elevated phytotoxicity in wheat coleoptiles bioassay (IC50 0.22 mM, r² 0.97; IC50 0.48 mM, r² 0.93; IC50 0.28 mM, r² 0.92, respectively). No correlation was found between the structure of the compounds and their activity. Compounds <b>5</b> and <b>11</b> were therefore tested on lettuce, tomato and <i>U. decumbens</i> germination and initial growth of seedlings. They did not show phytotoxic effects on lettuce and tomato. By the other hand, compound <b>11</b> significantly reduced the germination of <i>U. decumbens</i> in almost all concentrations, with values between 50 and 65%, demonstrating its importance to studies focused on weed control. The higher structural complexity of diaspores, when compared to wheat coleoptile, is suggested as a possible explanation for stronger inhibitory effects of isolated flavonoids on coleoptile elongation, than on germination/initial growth assays.</p>","PeriodicalId":9140,"journal":{"name":"Brazilian Journal of Botany","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141194194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}