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Perspective for Vegetative Reproduction of Eleaagnus macrophylla Thunb Species and Shepherdia canadensis (L.) Nutt

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American Journal of Plant Sciences 2025年第1期16卷 22-27页

作者： Norkulova Lobar Uchkunovna Haydarov Khislat Kudratovich department of botany Samarkand State University Samarkand Uzbekistan

Elaeagnaceae Juss. belongs to the family Elaeagnus L. and Shepherdia Nutt. This study aims at the significance and vegetative reproduction of species of the family (Elaeagnus macrophylla Thunb. and Shepherdia canadensis (L.) Nutt.) in the national economy. The trials were carried out in the experimental site of SamSU’s Botanic Garden, which is named after Sharof Rashidov. The study’s findings are based on the results obtained by planting cuttings of S. canadensis and E. macrophylla species of varying sizes and durations, as well as the cuttings’ roots and the impacts of growth chemicals.

关键词： Elaeagnaceae Elaeagnus Shepherdia Vegetative Reproduction Attractiveness Bioactive Compound Bush and Cuttings

Morphological and Phenological Characteristics of Ornamental Lianas (on the Example of Samarkand City)

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American Journal of Plant Sciences 2025年第1期16卷 35-40页

作者： Shukurova Mokhigul Erkin Qizi Haydarov Khislat Kudratovich department of botany Samarkand State University Named after Sharof Rashidov Samarkand Uzbekistan

Lianas are distributed as ornamental, perennial plants that are widely used in landscaping and popular all over the world. However, in recent times, ornamental lianas have also been used for vertical landscaping in residential buildings. Today, many lianas occupy a leading position among plants, due to their landscape features, such as the colorfulness of flowers, the variety of leaf shapes, and their aroma. The practice of growing flowers in Uzbekistan dates back to ancient times. Floriculture came to our republic through the Great Silk Road from China, Egypt, and India. Because of this, ornamental plants have been widely used for landscaping in cities such as Samarkand, Bukhara, Khiva, Shahrisabz, Kokand, and Margilan. Nowadays, perennial lianas are planted on the grounds of the Botanical Garden at Samarkand State University, and collections of these plants have been created. The garden area contains various species of lianas, including Lonicera japonica Thunb, Clematis florida Thunb, Parthenocissus quinquefolia (L.) Planch, Parthenocissus inserta (***) Fritsch, Hedera spiral L, Hedera canariensis Willd, Campsis radicans L, Wisteria sinensis (Sims) DC, Actinidia chinensis var. deliciosa (***.), Humulus lupulus L, Aristolochia clematitis L, and several varieties of Rosa canina L. such as Golden Celebration, Paprika, Aspirin, Burgund, and Rosarium Uetersen.

关键词： Liana Ornamental Flower Plant Greenery Rotting

Deciphering fungal metabolon coupling tandem inverse-electrondemand Diels-Alder reaction and semipinacol rearrangement for the biosynthesis of spiro polycyclic alkaloids

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Science China Chemistry 2025年第1期68卷 288-296页

作者： Shuai Liu Wen-Qiang Xu Ying-Tong Di Man-Cheng Tang Ding-Kang Chen Ming-Ming Cao Yao-Wen Chang Hong-Yu Tang Chun-Mao Yuan Jun-Bo Yang Zhi-Li Zuo Han Guo Zi-Fei Xu Ying Zeng Yun-Dong Wu Xiao-Jiang Hao Key Laboratory of Phytochemistry and Natural Medicines(Chinese Academy of Sciences) Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Lab of Computational Chemistry and Drug Design State Key Laboratory of Chemical OncogenomicsPeking University Shenzhen Graduate SchoolShenzhen 518055China Shenzhen Bay Laboratory Shenzhen 518055China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Microbial Metabolism School of Life Sciences&BiotechnologyShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical UniversityGuiyang 550014China Molecular Biology Experimental Center Germplasm Bank of Wild Species in Southwest ChinaKunming Institute of BotanyChinese Academy of SciencesKunming 650201China Yunnan Key Laboratory for Wild Plant Resources Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Research Unit of Chemical Biology of Natural Anti-Virus Products Chinese Academy of Medical SciencesBeijing 100730China

In the intricate process of natural product biosynthesis,a metabolon can enhance metabolic flux by associating sequential enzymes.A fungal metabolon,comprising of flavin-dependent monooxygenase Spe F and P450 monooxygenase Spe G,is identified in the biosynthesis of spiro polycyclic alkaloids(+)-notoamide B and its diastereomer(+)-versicolamide *** notoamide E as a substance,Spe F/Spe G metabolon can control the stereoselectivity of its 2,3-epoxidation,followed by hydrogen atom ion at C-17 to generate reactive epoxide tau-m A with dienyl iminium ***,(+)-notoamide B and(+)-versicolamide B are produced via tandem nonenzymatic inverse-electron-demand Diels-Alder reaction and semipinacol *** provides the first example of metabolon in the biosynthesis of spiro-prenylated indole alkaloids.

关键词： metabolon Diels-Alder reaction semipinacol rearrangement biosynthesis notoamides spiro polycyclic alkaloids

Biomass and carbon stocks in mangrove ecosystems of Kerala,southwest coast of India

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Ecological Processes 2020年第1期9卷 355-363页

作者： K.M.Harishma S.Sandeep V.B.Sreekumar department of forest botany Kerala Forest Research InstitutePeechiKerala 680653India department of Soil Science Kerala Forest Research InstitutePeechiKerala 680653India

Background:Mangroves are important tropical carbon sinks,and their role in mitigating climate change is well documented across the ***,the ecosystem carbon stocks in the mangroves of India have not been studied *** from this region is very limited for providing sufficient insights and authentic evaluation of carbon stocks on a regional *** this study,we evaluated the ecosystem carbon stock and its spatial variation in mangroves of Kerala,southwest coast of ***:The mean biomass stored in mangrove vegetation of Kerala is 117.11±1.02 t/ha(ABG=80.22±0.80,BGB=36.89±0.23 t/ha).Six mangrove species were found distributed in the study *** the different species,Avicennia marina had the highest biomass(162.18 t/ha)and least biomass was observed in Sonneratia alba(0.61 t/ha).The mean ecosystem carbon stock of mangrove systems in Kerala was estimated to be 139.82 t/ha,equivalent to 513.13 t CO2 e/ha with the vegetation and soil storing 58.56 t C/ha and 81.26 t C/ha ***:The present study reveals that Kerala mangroves store sizable volume of carbon and therefore need to be preserved and managed sustainably,to retain along with the increase in carbon *** features the need of broadening mangrove cover as well as restoring deteriorated land in the past 50 *** mangrove forests in this region are protected by the Kerala forest department,they have been frequently facing illegal encroachment,prawn cultivation,and coastal erosion.

关键词： Mangrove ecosystem Biomass Aboveground carbon Belowground carbon Ecosystem carbon stock

Biofilmed-PGPR:Next-Generation Bioinoculant for Plant Growth Promotion in Rice under Changing Climate

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Rice science 2025年第1期32卷 94-106,I0059,I0060页

作者： Jeberlin Prabina BRIGHT Hemant SMAHESHWARI Sugitha THANGAPPAN Kahkashan PERVEEN Najat ABUKHARI Debasis MITRA Riyaz SAYYED Andrea MASTINU department of Soil Science and Agricultural Chemistry Agricultural College and Research InstituteTamil Nadu Agricultural UniversityKillikulam 628252India Indian Council of Agricultural Research(ICAR)-Indian Institute of Soybean Research Indore 452001India Karunya Institute of Technology and Sciences School of Agricultural SciencesKarunya NagarCoimbatore 641114India department of botany&Microbiology College of ScienceKing Saud UniversityRiyadh-11495Saudi Arabia department of Microbiology Graphic Era(Deemed to be University)Clement TownDehradun 248002India department of Biological Sciences and Chemistry College of Arts and ScienceUniversity of NizwaNizwa 616Sultanate of Oman department of Molecular and Translational Medicine Division of PharmacologyUniversity of BresciaBrescia 25123Italy

The exopolysaccharide matrix of diazotrophic cyanobacteria was used to integrate phosphorus(P)and potassium(K)solubilizing bacteria,enhancing the survival of plant growth-promoting rhizobacteria,and ultimately the survival of bacteria in the rhizosphere for better plant growth.A new biofilm-based formulation comprising the diazotrophic cyanobacteria Anabaena AMP2,P-solubilizing Bacillus megaterium *** PB1,and K-solubilizing Rhizobium pusense KRBKKM1 was tested for efficacy in *** growth medium with half-strength BG-11 medium supplemented with 3%glucose showed best for biofilm formation under in vitro *** of the methanolic extract of the cyanobacterial-bacterial biofilm(CBB)showed the activity of antioxidants,such as 2-methoxy phenol and pentadecane,which are proven to improve plant-microbe interactions and plant growth,*** of rice seeds with CBB extract at 100 mL/kg or 200 mL/kg showed significant enhancement in germination rate and seedling ***,a pot culture experiment with the CBB formulations was carried out,and different growth and yield parameters were *** component analysis showed that plant growth,yield,soil dehydrogenase activity,and soil chlorophyll content were positively correlated with rice plants amended with vermiculite-based CBB at 2 kg/hm^(2) followed by a spray with aqueous CBB formulation at 5 mL/L at 15 and 30 d after rice transplanting grown with a 25%reduced level of nitrogen/phosphorus/potassium chemical fertilizers than the recommended ***,Pearson correlation analysis showed that yield was positively correlated with soil dehydrogenase(r=0.92**)and soil chlorophyll content(r=0.96**).We concluded that CBB could be used as a novel biofilm-based bio-inoculant to increase rice productivity and crop fitness as a component in integrated nutrient management and sustainable organic farming strategies with reduced chemical fertilizers.

关键词： cyanobacterial bacterial biofilm formulation rice volatile compound plant growth promotion reduced fertilizer level

The application and perspective of NMR and MS based strategies for functional compounds mining in medicinal and dietary plants

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Food Science and Human Wellness 2025年第1期14卷 50-63页

作者： Bodou Zhang Sheng Li Zhenzhen Liang Yinling Wei Jing Dong Hongyan Wen Lingli Guo Xiaojiang Hao Yu Zhang State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China University of Chinese Academy of Sciences Beijing 100049China

Medicinal and dietary plants provide numerous nutritional and functional compounds and also have various potential health benefits to *** specific and efficient techniques for accurate identification of nutritional compounds and functional metabolites is crucial for the development of functional foods from medicinal and dietary *** magnetic resonance(NMR)and mass spectrometry(MS)are indispensable and essential technologies that provide an unsurpassed wealth of untargeted identification,quantitative and qualitative analysis,and structural information in the study of food and plant *** the past decade,the rapid development of modern analytical technology has led to the emergence of new approaches and strategies for natural products *** the application of novel NMRand MS-based identification and dereplication strategies aided by artificial intelligence and machine learning algorithms have brought about a significant shift in the natural products discovery *** developments and changes in the natural products filed have given us insights into how to accurately target and mining nutritional,functional,and bioactive ***,we have summarized recent research on novel NMR and MS based strategies and methods focusing on functional compounds,accurate identification and efficient discovery mainly in medicinal and dietary *** review could provide a comprehensive perspective for a better understanding of novel strategies and methods based on NMR and MS technologies,which could provide valuable insights and ideas for functional compounds mining.

关键词： Nuclear magnetic resonance(NMR) Mass spectrometry(MS) New strategies Functional compounds Mining

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Comparative tree-ring anatomy of Fraxinus excelsior with Chalara dieback

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Journal of forestry Research 2018年第6期29卷 1741-1749页

作者： Mirela Tulik Barbaros Yaman Nesibe Kose department of forest botany Warsaw University of Life Sciences– SGGWWarsaw 02-787Poland Wood Anatomy and Dendrochronology Laboratory Bartin UniversityFaculty of ForestryBartinTurkey department of forest botany Istanbul UniversityFaculty of Forestry34473 IstanbulTurkey

We tested the hypothesis that the biometrical characters of wood elements in ash trees(Fraxinus excelsior L.) become modified in response to the progression of disease caused by Chalara fraxinea. Anatomical analyses were performed on wood samples collected at breast height from the trunks of groups of ash trees which contained healthy, weakened and dead trees. We measured(1) treering width,(2) earlywood vessel diameter,(3) earlywood vessel element length,(4) fibre length,(5) fibre diameter,(6) fibre lumen diameter, and(7) fibre wall thickness. We showed that tree-ring width diminished in all analysed groups during disease progression. However, the greatest suppression of growth was observed in dead trees. In both weakened and dead ash trees, the reduction in tree-ring width was accompanied by diminished vessel diameter in the earlywood of the outermost annual rings. The annual rings of dead trees had shorter fibres having greater lumen diameter and thinner cell walls. Consequently, water conduction in the sapwood of dead ash trees was less efficient owing to reduced vessel diameter, and this seems to be one of the greatest disease-induced morphological modifications. All the anatomical modifications might be due to leaf loss and crown dieback triggered by Chalara fraxinea.

关键词： Ash Dieback Fibres Vessels Wood

Tree growth decline to warm-wet conditions in boreal forests is linked to stand density

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forest Ecosystems 2025年第1期 74-82页

作者： Bingqian Zhao Yihong Zhu Lushuang Gao Qibing Zhang Mingqian Liu Klaus von Gadow Research Center of forest Management Engineering of State forestry and Grassland Administration Beijing Forestry University State forestry and Grassland Administration Key Laboratory of forest Resources&Environmental Management Beijing Forestry University department of Environmental Science Policy and ManagementUniversity of California State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of Sciences Laboratory of Wood Technology Ghent University Faculty of forestry and forest Ecology Georg-August-University G?ttingen department of forestry and Wood Science Faculty of AgriSciencesStellenbosch University

Warm-wet climatic conditions are widely regarded as conducive to remarkable tree growth, alleviating climatic pressures. However, the notable decline in tree growth observed in the southern edge of boreal forests has heightened concerns over the spatial-temporal dynamics of forest decline. Currently, attaining a comprehensive grasp of the underlying patterns and their propelling factors remains a formidable challenge. We collected tree ring samples from a network of 50 sites across the Greater Xing'an Mountains. These samples were subsequently grouped into two distinct clusters, designated as Groups A and B. The percentage change of growth(GC, %) and the proportion of declining sites were utilized to assess forest decline. The decline in tree growth within Larix gmelinii forests exhibits significant regional variation, accompanied by temporal fluctuations even within a given region. Group A exhibited a pronounced increase in frequency(59.26%) of occurrences and encountered more severe declines(21.65%) in tree growth subsequent to the 1990s, contrasting sharply with Group B, which observed lower frequencies(20.00%) and relatively less severe declines(21.02%) prior to the 1980s. The primary impetus underlying the opposite radial growth increments observed in Larix gmelinii trees from the interplay between their differential response to temperatures and wetter climatic conditions, which is significantly influenced by varying stand densities. In cold-dry conditions, low-density forests may experience soil water freezing,exacerbating drought conditions and thereby inhibiting tree growth, in Group B. Trees growth in high-density stands is restrained by warm-wet conditions, in Group A. These results provide new insights into the variability at the southern edge of the boreal forest biome with different responses to density and climate.

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The Potential Contribution of Wildlife Sanctuary to forest Conservation: A Case Study from Binsar Wildlife Sanctuary

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Journal of Mountain Science 2013年第5期10卷 854-865页

作者： Balwant RAWAT Vikram S.NEGI Janhvi MISHRA RAWAT Lalit M.TEWARI Laxmi RAWAT G.B. Pant Institute of Himalayan Environment and Development Kosi-Katarmal forest Research Institute DehradunMolecular TaxonomyBotany Division department of botany D.S.B. CampusKumaun University forest Research Institute DehradunForest Ecology and Environment Division

forest vegetation of a protected area （Binsar Wildlife Sanctuary） in Kumaun region （west Himalaya） was analysed for structure, composition and representativeness across three different altitudinal belts, lower （1,6oo-1,8oo m a.s.1.）, middle （1,900-2,100 m a.s.1.） and upper （2,200-2,400 m a.s.1.） during 2oo9-2011 using standard phytosociological methods. Four aspects （east, west, north and south） in each altitudinal belt were chosen for sampling to depict maximum representation of vegetation in the sanctuary. Population structure and regeneration behaviour was analysed seasonally for two years to show the establishment and growth of tree species. A total of 147 plant species were recorded from the entire region of which 27 tree species were selected for detailed study. Highest number was recorded at upper （18 species）, and lowest at lower altitudinal belt （15 species）. The relative proportion of species richness showed higher contribution of tree layer at each altitudinal belt. The population structure, based on the number of individuals, revealed a greater proportion of seedling layer at each altitudinal belt. The relative proportion of seedlings increases significantly along altitudinal belts （p〈0.05） while opposite trends were observed in sapling and tree layers. The density of sapling and seedling species varied non-significantly across seasons （p〉0.05）. The density values decreased in summer and increased during rainy season. As far as the regeneration status is concerned, middle and upper altitudinal belts showed maximum number of species with fair regeneration as compared to lower altitudinal belt. Overall density diameter distribution of tree species showed highest species density and richness in the smallest girth class and decreased in the succeeding girth classes. This study suggests that patterns of regeneration behaviour would determine future structural and compositional changes in the forest communities. It is suggested that the compositional changes v

关键词： Altitudinal gradient Populationstructure Regeneration status West Himalaya Wildlife Sanctuary.