Rodriguesia最新文献_第5页

Flora of Espírito Santo, Brazil: Alismataceae Espírito巴西桑托的植物区系:泽泻科

Rodriguesia Pub Date : 2022-01-01 DOI: 10.1590/2175-7860202273003

L. Matias, Hugo Pereira do Nascimento

引用次数: 0

Flora of Espírito Santo: Prepusa and Senaea (Helieae, Gentianaceae) 圣埃斯皮里托植物区系：Prepusa和Senaea（螺旋科，龙胆科）

Rodriguesia Pub Date : 2022-01-01 DOI: 10.1590/2175-7860202273020

Claudio Nicoletti de Fraga, E. P. Fernandez, André Paviotti Fontana

引用次数: 0

Flora of Espírito Santo: Saccolomataceae 圣埃斯皮里托的植物群:Saccolomataceae

Rodriguesia Pub Date : 2022-01-01 DOI: 10.1590/2175-7860202273021

P. Schwartsburd, N. T. L. Pena

引用次数: 0

Flora of Espírito Santo: Pontederiaceae espirito Santo的植物群:Pontederiaceae

Rodriguesia Pub Date : 2022-01-01 DOI: 10.1590/2175-7860202273022

Marco Octávio de Oliveira Pellegrini, Julia Cristina Guarnier

引用次数: 0

Proline and antioxidant enzymes protect Tabebuia aurea (Bignoniaceae) from transitory water deficiency 脯氨酸和抗氧化酶保护金莲(bignonaceae)短暂性缺水

Rodriguesia Pub Date : 2022-01-01 DOI: 10.1590/2175-7860202273031

Fátima Conceição de Jesus Freire, J. Silva-Pinheiro, Jayne Silva Santos, Arthur Gomes Lima da Silva, L. S. Camargos, L. Endres, G. C. Justino

{"title":"Proline and antioxidant enzymes protect Tabebuia aurea (Bignoniaceae) from transitory water deficiency","authors":"Fátima Conceição de Jesus Freire, J. Silva-Pinheiro, Jayne Silva Santos, Arthur Gomes Lima da Silva, L. S. Camargos, L. Endres, G. C. Justino","doi":"10.1590/2175-7860202273031","DOIUrl":"https://doi.org/10.1590/2175-7860202273031","url":null,"abstract":"Abstract Water deficiency is a major abiotic stress that limits biomass production and drives plant species distributions. We evaluate the effects of water deficiency on ecophysiological and biochemical parameters of seedlings of Tabebuia aurea. Plants were subjected to daily watering (control) and to stress by soil water deficiency for 29 days. Leaf area, plant biomass, gas exchange, SPAD index, maximum quantum yield (Fv / Fm), quantum yield of PSII (ΦPSII), superoxide dismutase (SOD) and L-ascorbate peroxidase (APX) activity, lipid peroxidation, and proline content were recorded. Plants responded to water deficit by reducing leaf area and accumulating proline. Stomatal conductance was reduced to limit the water loss by transpiration. However, limiting CO2 uptake caused reduction in photosynthesis and biomass. The excess of energy unutilized by photosynthesis reduced SPAD index and ΦPSII. As a result, we observed an increase in SOD and APX activity, protecting chloroplast membranes from further damages caused by lipid peroxidation. Our results indicate that T. aurea have capacity to survive under water deficiency reducing stomatal aperture, but affecting the rate of CO2 assimilation. Nevertheless, plants showed mechanisms to preventing damages to the photosynthetic apparatus. Such plasticity is an important adaptation for plants growing in dry environmental.","PeriodicalId":38672,"journal":{"name":"Rodriguesia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67283124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Myrcia (Myrtaceae) in the Vale Natural Reserve, Linhares, Espírito Santo, Brazil 巴西林哈雷斯谷自然保护区中的桃金娘(桃金娘科)Espírito Santo

Rodriguesia Pub Date : 2022-01-01 DOI: 10.1590/2175-7860202273024

Fernanda Savioli Scaravelli, P. H. Gaem, K. S. Valdemarin, E. Lucas, F. Mazine

引用次数: 1

Mentheae (Nepetoideae - Lamiaceae) from the Itatiaia National Park, Brazil 薄荷科(薄荷总科-薄荷科)产自巴西意大利亚国家公园

Rodriguesia Pub Date : 2022-01-01 DOI: 10.1590/2175-7860202273065

A. B. Oliveira, G. Antar, M. Trovó

引用次数: 0

Seed’s morpho-anatomy and post-seminal development of Bromeliaceae from tropical dry forest 热带干旱林凤梨科植物种子形态解剖及种子后发育

Rodriguesia Pub Date : 2022-01-01 DOI: 10.1590/2175-7860202273050

A. M. Martelo-Solorzano, K. I. Lidueña-Pérez, J. P. Corredor-Prado

{"title":"Seed’s morpho-anatomy and post-seminal development of Bromeliaceae from tropical dry forest","authors":"A. M. Martelo-Solorzano, K. I. Lidueña-Pérez, J. P. Corredor-Prado","doi":"10.1590/2175-7860202273050","DOIUrl":"https://doi.org/10.1590/2175-7860202273050","url":null,"abstract":"Abstract Drastic changes in dry tropical forest result in the loss of biological components and reveal the importance of studies on the biology of species living in it. The present study aimed to describe seed morphoanatomy, germination and post-seminal development of Bromeliaceae species in fragments of tropical dry forest in Sucre, Colombia. Seven species representing Bromelia and Tillandsia genera were evaluated. The results provide characteristics related to the habitat of each species and contribute to distinguish the genera evaluated: fruit and seed measurements, seed shape, plumose appendage, testa characteristics, and the aleurone layer, embryo endosperm ratio, types of reserves, constriction zone in the embryo and type of post-seminal development. Characteristics of plumose appendages and the presence of vascular bundles in the embryo also contribute to distinguish Tillandsia species. In T. elongata and T. flexuosa, high number of seeds per fruit (> 100), morphoanatomical aspects, high germination (> 92%) and plant formation (> 77%) percentages, and higher germination rate values (> 4.5) give them the potential capacity for establishment in this environment. Our results provide information with taxonomic and ecological relevance for bromeliads in dry tropical forest.","PeriodicalId":38672,"journal":{"name":"Rodriguesia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67283614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Non-negligible role of dead organic matter in a rainforest remnant in Northeast Brazil 死有机物在巴西东北部雨林遗迹中不可忽视的作用

Rodriguesia Pub Date : 2022-01-01 DOI: 10.1590/2175-7860202273041

P. Sena, N. Fonsêca, A. C. Lins-e-Silva

{"title":"Non-negligible role of dead organic matter in a rainforest remnant in Northeast Brazil","authors":"P. Sena, N. Fonsêca, A. C. Lins-e-Silva","doi":"10.1590/2175-7860202273041","DOIUrl":"https://doi.org/10.1590/2175-7860202273041","url":null,"abstract":"Abstract Dead organic matter represents an essential reservoir of carbon, especially that allocated in standing dead trees, coarse woody debris, and fine litter, playing a pivotal role in nutrient cycling and habitat provisioning. However, necromass is frequently disregarded in forest assessments. Here, we aimed to perform the first assessment of multiple necromass compartments in the Atlantic Forest of Northeast Brazil, providing a basis for future integrative studies related to necromass in this region. We registered 17 standing dead trees in 0.5 hectare and 239 logs of coarse woody debris. Necromass had 3.9 Mg.ha-1 of standing dead trees, 54.24 Mg.ha-1 of coarse woody debris and 7.2 Mg.ha-1 of litter. We indicate that standing dead trees and coarse debris were mostly in the intermediate and final stages of decomposition. Leaves were the dominant component of litter, and drier months had more litterfall. Finally, we highlight that assessing standing dead trees and coarse woody debris adds 25.6% on top of aboveground tree mass, improving information about organic matter storage in rainforest ecosystems. Our findings emphasize that the necromass compartment must be considered in forest assessments, also including small pieces of coarse woody debris, which could inform better practices of forest management.","PeriodicalId":38672,"journal":{"name":"Rodriguesia","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67283817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Asymbiotic germination, initial development in vitro and acclimatization of Cyrtopodium paludicolum Hoehne, a Brazilian Savanna orchid species 巴西热带草原兰种Cyrtopodium paludicolum Hoehne的非共生萌发、离体初期发育和驯化

Rodriguesia Pub Date : 2022-01-01 DOI: 10.1590/2175-7860202273043

W. D. M. Ferreira, Adriana Magno de Oliveira, Joyce Cavalcante Viana, R. M. Suzuki, J. R. G. D. Oliveira

{"title":"Asymbiotic germination, initial development in vitro and acclimatization of Cyrtopodium paludicolum Hoehne, a Brazilian Savanna orchid species","authors":"W. D. M. Ferreira, Adriana Magno de Oliveira, Joyce Cavalcante Viana, R. M. Suzuki, J. R. G. D. Oliveira","doi":"10.1590/2175-7860202273043","DOIUrl":"https://doi.org/10.1590/2175-7860202273043","url":null,"abstract":"Abstract Cyrtopodium paludicolum is a terrestrial orchid species, native to Brazil, whose natural propagation is jeopardized by the intensive collection from the wild and is threatened by agricultural expansion in Cerrado areas. In light of that, this investigation aimed at studying the in vitro germination and early development of C. paludicolum as influenced by culture medium, sucrose and growth regulators as well as its micropropagation by using dark-grown stem segments. A protocol for its acclimatization is also detailed. The effects of Murashige & Skoog (MS), Knudson C (KC) and Vacin & Went (VW) media on the in vitro germination and initial development were tested. The influence of different concentrations of BA, NAA, and of sucrose on plant multiplication and growth were evaluated. The possibility of using etiolated stem segments for micropropagation was also assessed. Acclimatization was accomplished in two phases by using three different substrates. The results showed that VW was the best medium for germination whereas for seedling formation KC was the most advantageous since they were healthy and vigorous. Sucrose at 2% favored the greatest seedling growth and development. Shoot and root proliferation and development were best promoted in the presence of 2.28/2.28 and 0.57/0.57 µM BA/NAA, respectively. The use of etiolated stem segments for micropropagation was effective. Successful acclimatization was accomplished by initially growing plants in community pots containing a 3:1 (v/v) mix of Bioplant and dried Sphagnum moss followed by their transfer to individual pots containing a 2:1 (v/v) mix of Bioplant and Ouro Negro substrates.","PeriodicalId":38672,"journal":{"name":"Rodriguesia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67283888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4