Acta Botanica Croatica最新文献_第2页

Placoneis modaomensis sp. nov. (Bacillariophyta; Cymbellaceae), a new species from Guangdong Province, China 莫达梅氏菌（Placoneis modaomensis sp.nov.），广东一新种

IF 1.3 4区生物学

Acta Botanica Croatica Pub Date : 2023-05-15 DOI: 10.37427/botcro-2023-009

YU-JIE Li, JI-SHU Guo, HONG-PING Ni, YING-YAN Huang, J. Kociolek, YAN-LING Li

{"title":"Placoneis modaomensis sp. nov. (Bacillariophyta; Cymbellaceae), a new species from Guangdong Province, China","authors":"YU-JIE Li, JI-SHU Guo, HONG-PING Ni, YING-YAN Huang, J. Kociolek, YAN-LING Li","doi":"10.37427/botcro-2023-009","DOIUrl":"https://doi.org/10.37427/botcro-2023-009","url":null,"abstract":"One new species, Placoneis modaomensis, found in freshwater environment from tributary of the Pearl River which lies in Modaomen Channel, Zhuhai County, Guangdong Province, China, is described based on light and scanning electron microscope observations. P. modaomensis sp. nov. has the morphological features that are typical for the genus, including external terminal raphe fissures curve to the opposite sides and areolae with internal volate occlusions. The new species is similar to P. amphibola (Cleve) E.J. Cox, P. amphiboliformis (Metzeltin, Lange-Bertalot & Soninkhishig) Vishnyakov, P. parvapolonica Lange-Bertalot & Wojtal, P. clementispronina Lange-Bertalot & Wojtal and P. nanoclementis Lange-Bertalot & Wojtal in the shape of the valves and having course striae but it can be easily distinguished by the two main morphological characteristics: external central raphe endings bent in the opposite directions, and areolae covered by volate occlusions externally. The latter feature appears to be new for taxa assigned to the genus Placoneis. Data on the associated diatom flora and its ecology are also given. These findings increase our understanding about the morphology of Placoneis in general and its and distribution of the genus in China.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45474679","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}

引用次数: 0

Effect of different substrates on in vitro symbiotic seed germination for soilless production of Anacamptis laxiflora orchid 不同基质对无土生产水杨体外共生种子萌发的影响

IF 1.3 4区生物学

Acta Botanica Croatica Pub Date : 2023-05-15 DOI: 10.37427/botcro-2023-010

E. C. Aytar, Yasemin ÖZDENER KÖMPE

{"title":"Effect of different substrates on in vitro symbiotic seed germination for soilless production of Anacamptis laxiflora orchid","authors":"E. C. Aytar, Yasemin ÖZDENER KÖMPE","doi":"10.37427/botcro-2023-010","DOIUrl":"https://doi.org/10.37427/botcro-2023-010","url":null,"abstract":"In recent years, the orchid species have become endangered due to overuse and habitat destruction. As with most flowering plants, seed production is the primary strategy for reproduction in orchids. Orchids produce tiny seeds consisting of a seed coat and a rudimentary embryo. However, it lacks the endosperm, which is generally required as the primary energy source during germination. The only way to germinate orchid seeds is to get nutrients from an external source. In nature, this is achieved by mycorrhizal symbiosis. This study used Ceratobasidium sp. inoculation of Anacamptis laxiflora (Lam.) seeds combined with media with various organic substrates to determine their effectiveness on germination and seedling development by in vitro culture. The highest germination rate (35.78%) was obtained in the medium with addition of young hazelnut leaves. Then, soilless ex vitro symbiotic germination was performed on young hazelnut leaves, the most effective organic substrate. Seed germination was determined to be 19.01% in this medium while 14.87% seedlings with developed leaves and roots were formed. For the first time, success was achieved by producing A. laxiflora from seed in ex vitro conditions without soil and adapting it to nature.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47455474","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}

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The new association Pimpinello lithophilae-Centaureetum lovricii (Crithmo-Staticetea) from the island of Vis (southern Croatia) 来自克罗地亚南部维斯岛的Pimpinello lithophae - centaureetum lovricii (Crithmo-Staticetea)新组合

IF 1.3 4区生物学

Acta Botanica Croatica Pub Date : 2023-03-29 DOI: 10.37427/botcro-2023-007

N. Jasprica, M. Terzi

引用次数: 0

Aluminum accumulation and tolerance in four Amaranthus species 四种苋属植物的铝积累和耐受性

IF 1.3 4区生物学

Acta Botanica Croatica Pub Date : 2023-03-08 DOI: 10.37427/botcro-2023-006

F. Nazari, R. Hajiboland, C. Poschenrieder, E. Kahneh, S. Salehi-Lisar, Aioub Moradi

{"title":"Aluminum accumulation and tolerance in four Amaranthus species","authors":"F. Nazari, R. Hajiboland, C. Poschenrieder, E. Kahneh, S. Salehi-Lisar, Aioub Moradi","doi":"10.37427/botcro-2023-006","DOIUrl":"https://doi.org/10.37427/botcro-2023-006","url":null,"abstract":"About one-third of the earth’s land area consists of acidic soils. The rhizotoxic Al3+ is one of the primary constraints associated with low soil pH. Various Amaranthus species are important components of the weed flora in tea plantations on acid soils in north Iran. In this study, four Amaranthus species (A. blitoides, A. retroflexus, A. cruentus, and A. tricolor) were grown under hydroponic conditions with total Al concentrations of 0, 20, 50, 200, and 400 µM corresponding to free Al3+ activity of 0, 3.75, 11.97, 60.34, and 125 µM, respectively. Low Al concentrations (20, 50, or 200 µM) stimulated plant growth, A. tricolor demonstrated the highest improvement in shoot growth (93%), whereas A. retroflexus exhibited the greatest improvement in root biomass (367%), total root length (173%), and aproot length (32%). Although the response of shoot biomass to 400 µM Al varied among species, all species were able to accumulate Al in the leaves above the critical level considered for Al hyperaccumulation (1 mg g–1 DW). Our findings revealed Al accumulation in Amaranthus species for the first time at the genus and family levels, suggesting that these species are suitable for the restoration and revegetation of acid-eroded soils.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48488883","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}

引用次数: 0

First record of Diplotomma cedricola in the eastern Mediterranean 地中海东部首次记录到塞德里科双叶蛾

IF 1.3 4区生物学

Acta Botanica Croatica Pub Date : 2023-03-08 DOI: 10.37427/botcro-2023-005

Gregorio Aragón, Isabel Martínez

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Effects of exogenous NO on the growth and photosynthetic fluorescence characteristics of ryegrass seedlings under B[a]P stress 外源NO对B[a]P胁迫下黑麦草幼苗生长及光合荧光特性的影响

IF 1.3 4区生物学

Acta Botanica Croatica Pub Date : 2023-02-13 DOI: 10.37427/botcro-2023-004

Yue Li, Junqiang Ma, Yu Wang, Sunan Xu, Lei Jiang, Lihong Zhang, Wei Hou

{"title":"Effects of exogenous NO on the growth and photosynthetic fluorescence characteristics of ryegrass seedlings under B[a]P stress","authors":"Yue Li, Junqiang Ma, Yu Wang, Sunan Xu, Lei Jiang, Lihong Zhang, Wei Hou","doi":"10.37427/botcro-2023-004","DOIUrl":"https://doi.org/10.37427/botcro-2023-004","url":null,"abstract":"Benzoapyrene (B[a]P) pollution poses a threat to the environment and the food chain and consequently to human health. However, the alleviation of the harmful effects of B[a]P pollution in perennial ryegrass (Lolium perenne L.) by the application of exogenous nitric oxide (NO) has been ignored. Thus, in this paper the effects of exogenous sodium nitroprusside (SNP, a NO donor) on the growth, photosynthetic fluorescence characteristics, and antioxidant enzyme activity of ryegrass exposed to B[a]P stress are investigated. B[a]P stress induced the reduction of the aboveground and belowground dry weights, chlorophyll (a, b), the total chlorophyll contents, the carotenoid content, the net photosynthetic rate (Pn), the intercellular carbon dioxide concentration (Ci), the water use efficiency (WUE), the photosystem II (PSII) potential activity (Fv/F0), the maximum quantum yield of PSII photochemistry (Fv/Fm), the steady-state fluorescence yield (Fs), and the non-photochemical quenching (qN), while enhancement was recorded in response to the foliar spray of SNP at 200 and 300 μmol·L-1 under B[a]P stress. Gray correlation and principal component analyses show that 200 μmol·L 1 of SNP more drastically alleviated the damage caused by B[a]P stress than 300 μmol·L 1 of SNP. The exogenous NO-mediated alleviation of B[a]P toxicity in ryegrass was associated with preserved photosynthetic characteristics and activation of antioxidant enzymes.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47731936","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}

引用次数: 0

Pollen morphology and flower visitors of Leiotulus aureus (Sm.) Pimenov & Ostr. (Apiaceae) 金黄色花（Leiotulus aureus（Sm.）Pimenov和Ost。（Apiaceae）

IF 1.3 4区生物学

Acta Botanica Croatica Pub Date : 2022-12-22 DOI: 10.37427/botcro-2023-003

M. Mačukanović-Jocić, D. Stešević, D. Rančić, M. Šundiċ

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The epiphytic bryophyte succession of Buxus sempervirens forests in the Fırtına Valley, Rize (North Türkiye) 日则(北缅甸)Fırtına谷地永久野杨林的附生苔藓演替

IF 1.3 4区生物学

Acta Botanica Croatica Pub Date : 2022-11-07 DOI: 10.37427/botcro-2023-002

T. Ezer, M. Alataş, N. Batan, H. Erata

{"title":"The epiphytic bryophyte succession of Buxus sempervirens forests in the Fırtına Valley, Rize (North Türkiye)","authors":"T. Ezer, M. Alataş, N. Batan, H. Erata","doi":"10.37427/botcro-2023-002","DOIUrl":"https://doi.org/10.37427/botcro-2023-002","url":null,"abstract":"In this study, the epiphytic bryophyte succession of the Buxus sempervirens L. forests in Fırtına Valley (Çamlıhemşin-Rize, North Türkiye), one of the nine biodiversity hotspots in Türkiye, were investigated. For this purpose, a total of 60 sampling plots were taken from the live trunks of the B. sempervirens trees of different ages. Twenty-nine epiphytic bryophyte species were determined (24 mosses and 5 liverworts) within the sample plots. Also, six different life form types and four different habitat affinity categories were determined. The mat type life form is in the first place with 34.4% whereas the and cortico-saxicolous species are the most common with 51.7%. Two-Way Indicator Species Analysis (TWINSPAN) classified the epiphytic bryophyte communities on the trunks of the B. sempervirens at the second level into two main clusters (A and B) and three sub-clusters (A1, B1 and, B2). Detrended Correspondence Analysis (DCA) axis 1 was interpreted as gradient along the height of the epiphytic habitat (from the lower base to the upper zone) on trunks and the DCA axis 2 was interpreted as gradient of moisture (from mesic to xeric). Exsertotheca crispa (Hedw.) S.Olsson, Enroth & D.Quandt was the species with the highest Index of Ecological Significance (IES) value on the lower bases of the aged trees. Species diversity and epiphytic cover in the upper zones were lower than in the basal and middle zones in the study area. While Metzgeria furcata, (L.) Corda, Oxyrrhynchium hians (Hedw.) Loeske, Plagiothecium nemorale (Mitt.) A.Jaeger, and Radula lindenbergiana Gottsche ex C.Hartm were only found on old trees, Ctenidium molluscum (Hedw.) Mitt. and Pseudoleskeella nervosa (Brid.) Nyholm were only found on middle-aged trees.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47080710","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}

引用次数: 0

Taxonomic importance of leaf anatomical characters for the genus Alopecurus L. (Poaceae) 石竹属(禾科)叶片解剖特征的分类学意义

IF 1.3 4区生物学

Acta Botanica Croatica Pub Date : 2022-10-31 DOI: 10.37427/botcro-2022-025

Sinem Günaydın, C. Aykurt

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Acer velutinum Bioss. (velvet maple) seedlings are more tolerant to water deficit than Alnus subcordata C.A. Mey. (Caucasian alder) seedlings 紫槭。(丝绒枫)幼苗比Alnus subcordata C.A. Mey更耐水分亏缺。(高加索桤木)幼苗

IF 1.3 4区生物学

Acta Botanica Croatica Pub Date : 2022-10-31 DOI: 10.37427/botcro-2022-029

M. Ravanbakhsh, B. Babakhani, M. Ghasemnezhad, F. Serpooshan, Mohamad Hassan Biglouie

{"title":"Acer velutinum Bioss. (velvet maple) seedlings are more tolerant to water deficit than Alnus subcordata C.A. Mey. (Caucasian alder) seedlings","authors":"M. Ravanbakhsh, B. Babakhani, M. Ghasemnezhad, F. Serpooshan, Mohamad Hassan Biglouie","doi":"10.37427/botcro-2022-029","DOIUrl":"https://doi.org/10.37427/botcro-2022-029","url":null,"abstract":"Drought stress is a major environmental factor limiting plant growth. Selection of drought-tolerant plants is of critical importance in vegetation restoration and forestation programs. Alnus subcordata and Acer velutinum are two valuable, dominant, and endemic species in the Hyrcanian forests. There are fast-growing species and significant diffuse-porous hardwood in afforestation and reforestation. One-year old seedlings of both species were exposed to four water shortage treatments (100, 75, 50 and 25% of field capacity (FC) chosen as control, mild, moderate, and severe) for 12 weeks. Thereafter, their morphological characteristics such as height and basal area, total and organs biomass (root, stem, and leaf), leaf area (LA), specific leaf area (SLA), leaf area ratio (LAR), as well as physiological and biochemical characteristics such as relative water content (RWC), content of chlorophyll, free proline and malondialdehyde (MDA), and superoxide dismutase (SOD) and peroxidase (POD) activity were measured. The results showed that when exposed to reduced water availability, plants’ height, basal diameter, total and organs biomass, LA, LAR, RWC and chlorophyll content decreased, but their proline concentration, MDA content, SOD, and POD activity increased in both species. The root to shoot ratio (R/S) and root mass ratio (RMR) increased at 50 and 25% FC treatments in A. subcordata, whereas no significant difference was found in A. velutinum under drought treatments. SLA increased significantly at 50% FC in A. velutinum and decreased in A. subcordata under drought treatments compared to control treatment. A. velutinum showed more proline content, RWC, POD, and lower increase in MDA content than A. subcordata under moderate treatment. Therefore, A. velutinum appears to possess a better mechanism to cope drought stress. The drought tolerance of A. velutinum may enhance its potential for climatic adaptations under drier conditions with the ongoing climatic change.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46948433","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}

引用次数: 0