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Plasticity of leaf morphology of Bruguiera sexangula to salinity zones in Bangladesh's Sundarbans

Journal of Forestry Research 2022年第6期33卷 1857-1866页

作者： Md.Salim Azad Abdus Subhan Mollick Rawnak Jahan Khan Ranon Md.Nabiul Islam Khan Md.Kamruzzaman Forestry and Wood Technology discipline Khulna UniversityKhulna 9208Bangladesh Graduate School of agriculture Kyoto UniversityKyoto 606-8501Japan

Bruguiera sexangula(Lour.)Poir is an exclusive evergreen mangrove species to the Sundarbans of *** grows well in moderate saline zones with full *** study presents leaf morphological plasticity in *** to saline *** were sampled from different saline zones and various morphological traits were *** results exposed a wide deviations of leaf size parameters:leaf length varied 6.6–17.3 cm;width 2.7–7.8 cm;upper quarter width 2.2–6.5 cm;down quarter width 2.5–7.3 cm;and petiole length 0.17–1.43 *** length was significantly larger in fresh water than in other salinity zones,whereas,leaf width,upper and lower leaf quarters were significantly larger in medium saline *** shape parameters showed a large variation among saline *** base angle was significantly larger in both medium and strong salinity *** angle was significantly greater in medium salinity *** perimeter was significantly larger in fresh water but leaf area was significantly bigger in medium saline *** index and specific leaf area were maximum in moderate saline *** index was the highest in moderate saline for almost all the parameters *** ordination(PCA)showed clusters of leaf samples although there were some overlap among them which suggested a salt-stress relationship among salinity *** results indicate that *** had a plasticity strategy on leaf morphological parameters to salinity in the *** study will provide basic information of leaf plasticity of this species among saline zones which will help for site selection of coastal planting and will also provide information for policy makers to take necessary steps for its conservation.

关键词： Salinity stress Phenotypic variation Plasticity index Specific leaf area PCA

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Biochemical and Metabolomics on Rice Cultivars

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Rice science 2019年第3期26卷 189-194,I0013,I0014-I0017页

作者： Hurugalavadi Puttaswamaiah RANJITHA Rame GOWDA Nagarajappa NETHRA Narayanappa AMRUTA Hemanth Kumar KANDIKATTU Department of Seed Science and Technology University of Agriculture Sciences Gandhi Krishi Vignana Kendra Biochemistry and Nanosciences discipline Defence Food Research Laboratory

Plant metabolites are important for both plant life and human nutrition. However, the genetic control of plant metabolome remains largely unknown. Here, we performed a genetic analysis of the different rice metabolome and isozymes which are highly versatile and non-destructive as bio-markers. Five isozymes peroxidase, catalase, malate dehydrogenase, alcohol dehydrogenase(ADH), polyphenol oxidase were studied to characterize the thirty rice cultivars and two hybrids KRH-2 and KRH-4 along with their parental lines. Among the zymograms, ADH was found to be useful for the detection of cultivars, like CTH1, IR64, IR30864, with an Rm value of 0.549. The metabolomics of rice cultivars by using gas chromatography coupled with mass spectrometry instrument with selected reaction monitoring mode software identified the 66 metabolites in the rice samples, including amino, organic, fatty acids, alcohols and sugars(mono-/dis-accharides). All metabolites investigated varied significantly among rice samples. Jaya had the higher number of metabolites(15) with a peak for each metabolite, followed by Jyothi(13). This study demonstrated a powerful tool and provided a high-quality data for understanding the plant metabolome and isozymes, which may help bridge the gap between the genome and phenome.

关键词： gas chromatography mass spectrometry isozyme spectroscopy metabolomics rice

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Small auxin-up RNA gene OsSAUR33 promotes seed aging tolerance in rice

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Journal of Integrative agriculture 2025年第1期24卷 61-71页

作者： Shan Sun Wenjun Li Yanfen Fang Qianqian Huang Zhibo Huang Chengjing Wang Jia Zhao Yongqi He Zhoufei Wang Laboratory of Seed Science and Technology South China Agricultural University/Guangdong Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-BioresourcesGuangzhou 510642China School of agriculture Yunnan UniversityKunming 650091China

Seed aging tolerance during storage is generally an important trait for crop production, yet the role of small auxin-up RNA genes in conferring seed aging tolerance is largely unknown in rice. In this study, one small auxin-up RNA gene, OsSAUR33, was found to be involved in the regulation of seed aging tolerance in rice. The expression of OsSAUR33 was significantly induced in aged seeds compared with unaged seeds during the seed germination phase. Accordingly, the disruption of OsSAUR33 significantly reduced seed vigor compared to the wild type(WT) in response to natural storage or artificial aging treatments. The rice OsSAUR33 gene promotes the vigor of aged seeds by enhancing their reactive oxygen species(ROS) level during seed germination, and the accumulation of ROS was significantly delayed in the aged seeds of Ossaur33 mutants in comparison with WT during seed germination. Hydrogen peroxide(H_(2)O_(2)) treatments promoted the vigor of aged seeds in various rice varieties. Our results provide timely theoretical and technical insights for the trait improvement of seed aging tolerance in rice.

关键词： auxin-responsive gene reactive oxygen species rice seed aging seed vigor

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Floristic composition and management of cropland agroforest in southwestern Bangladesh

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Journal of Forestry Research 2014年第3期25卷 597-604页

作者： Md. Hasanuzzaman Mahmood Hossain Mustafa Saroar Forestry and Wood Technology discipline Khulna University Urban and Rural Planning discipline Khulna University

Cropland agroforest is an important production system in the southwest region of Bangladesh. This study focused on the floristic composition and management of existing cropland agroforests. A total of 313 cropland agroforests were surveyed and 83%respondents practiced pure agroforestry while the remaining 17% practiced agroforestry with fisheries. A total of 18 forest trees and 2 shrubs were recorded from 11 families and 59 species of agricultural crops were from 28 families. A higher proportion （79%） of cropland agroforests were occupied small land areas （0.12-0.80 ha）. About 63% of respondents planted trees for fruit production and 47%for timber production, and 35%of respondents engaged in commercial production （35%）. Swietenia macrophylla was the most prevalent species （relative prevalence 20.83） followed by Man-gifera indica （relative prevalence 15.57） and Cocos nucifera （relative prevalence 7.08）. Shorter spacing was used for timber and fuel wood species and wider spacing for fruit trees. A wide range of rotation periods, from 5 to 25 years, was observed for both cases. The use of chemical fertilizer was highest followed by cow dung and compost in cropland agroforests. Overall management practices of cropland agroforest in southwest Bangladesh were determined by the end product and local demand.

关键词： agroforestry Bangladesh cropland fruit production timber production

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Impacts of heavy metals on 1,2-dichloroethane biodegradation in co-contaminated soil

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Journal of Environmental Sciences 2009年第5期21卷 661-666页

作者： Ademola O. Olaniran Adhika Balgobind Balakrishna Pillay discipline of Microbiology School of Biochemistry Genetics Microbiology and Plant Pathology Faculty of Science and Agriculture University of KwaZulu-Natal (Westville Campus) Private Bag X54001 Durban 4000 Republic of South Africa

1,2-Dichloroethane （DCA）, a potential mutagen and carcinogen, is commonly introduced into the environment through its industrial and agricultural use. In this study, the impact of lead and mercury on DCA degradation in soil was investigated, owing to the complex co-contamination problem frequently encountered in most sites. 1,2-Dichloroethane was degraded readily in both contaminated loam and clay soils with the degradation rate constants ranging between 0.370-0.536 week-1 and 0.309-0.417 week-1, respectively. The presence of heavy metals have a negative impact on DCA degradation in both soil types, resulting in up to 24.11% reduction in DCA degradation within one week. Both biostimulation and treatment additives increased DCA degradation, with the best degradation observed upon addition of glucose and a combination of diphosphate salt and sodium chloride, leading to about 17.91% and 43.50% increase in DCA degradation, respectively. The results have promising potential for effective remediation of soils co-contaminated with chlorinated organics and heavy metals. However, the best bioremediation strategy will depend on the soil types, microbial population present in the soil matrices, nutrients availability and metal forms.

关键词： biodegradation biostimulation co-contamination heavy metals treatment additives

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Genotypic Divergence, Photosynthetic Efficiency, Sodium Extrusion, and Osmoprotectant Regulation Conferred Salt Tolerance in Sorghum

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Phyton-International Journal of Experimental Botany 2023年第8期92卷 2349-2368页

作者： Ashaduzzaman Sagar Md.Sabibul Haque Md.Alamgir Hossain Md.Nesar Uddin Jannat E.Tajkia Md.Ashik Mia Toufika Hossain Shabi Md.Solaiman Ali Fakir Md.Abdul Kader Walid Soufan Md.Atikur Rahman Muhammad Aamir Iqbal Mohammad Sohidul Islam Ayman El Sabagh A.K.M.Zakir Hossain Department of Crop Botany Bangladesh Agricultural UniversityMymensingh2202Bangladesh Planning and Development Division Bangladesh Institute of Nuclear AgricultureMymensingh2202Bangladesh Department of Soil Science Bangladesh Agricultural UniversityMymensingh2202Bangladesh agriculture and Food Technology discipline School of AgricultureGeographyEnvironmentOcean and Natural SciencesUniversity of the South PacificSamoa agriculture discipline College of ScienceHealthEngineering and EducationMurdoch UniversityPerthWA 6150Australia Plant Production Department College of Food and AgricultureKing Saud UniversityRiyadh11451Saudi Arabia Grassland and Forage Division National Institute of Animal ScienceRural Development AdministrationCheonan31000Korea Department of Agronomy Faculty of AgricultureUniversity of Poonch RawalakotRawalakot12350Pakistan Department of Agronomy Hajee Mohammad Danesh Science and Technology UniversityDinajpurBangladesh Faculty of agriculture Kafrelsheikh UniversityKafrelsheikh33516Egypt

Salt stress is one of the major limitations to modern agriculture that negatively inﬂuences plant growth and *** tolerant cultivar can provide excellent solution to enhance stress tolerance with plantﬁtness to unfavorable ***,this study was aimed to screen salt tolerant sorghum genotypes through evaluating of different morphological,biochemical,and physiological attributes in response to salinity *** this study,we have been evaluated total six sorghum genotypes including Hybrid sorgo,Debgiri,BD-703,BD-706,BD-707,and BD-725 under salt stress(12 dS m^(-1) NaCl).The response variables included length and weight of root and shoot,root:shoot ratio(RSR),photosynthesis(A),transpiration rate(E),elemental concen-trations(K^(+),Na^(+) and K^(+)/Na^(+)),photochemical efﬁciency of photosystem II(F_(v)/F_(m)),water use efﬁciency(WUE)and pigment content(chlorophyll a,and b).The results revealed that saline environment signiﬁcantly reduced all response variables under study of sorghum genotypes,however,Hybrid sorgo remained unmatched by recording the maximum root and shoot *** same genotype recorded higher photosynthetic efﬁciency which was attributed to Na^(+) extrusion,K^(+) uptake and higher K^(+)/Na^(+) ratio(1.8 at stress),while these mechanisms were not fully active in rest of ***,this study also implies the involvement of proline in imparting tolerance against saline environment in Hybrid sorgo ***,BD-703 remained the most salt sensitive genotype as evident from the minimum morphological growth traits and the least biosynthesis of ***ﬁndings open new research avenues for salt stress alleviation by identifying elite salt-to-lerant genotypes of sorghum for breeding programs.

关键词： Salinity tolerance sorghum photosynthesis proline ion accumulation genotypic variance

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Influences of Biochar and Biochar-Mineral Complex on Mycorrhizal Colonisation and Nutrition of Wheat and Sorghum

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Pedosphere 2015年第5期25卷 686-695页

作者： Paul BLACKWELL Stephen JOSEPH Paul MUNROE Hossain M.ANAWAR Paul STORER Robert J.GILKES Zakaria M.SOLAIMAN Department of agriculture and Food Western Australia Geraldton Regional Office School of Materials Science and Engineering University of New South WalesSydney discipline of Chemistry University of Newcastle University of Wollongong School of Earth and Environment and UWA Institute of agriculture The University of Western Australia Australian Mineral Fertilisers Pty Ltd. Soil Biology and Molecular Ecology Group School of Earth and Environment and UWA Institute of AgricultureThe University of Western Australia

The high price of synthetic fertilisers and the price barrier for biochar as a soil amendment have encouraged the exploration of using biochar in fertiliser replacement formulations. Biochars coupled with fertilisers can be applied at lower application rates to achieve benefits in plant growth and nutrition, as well as soil biological fertility. It is necessary to evaluate the use of biochar as a fertiliser substitute. Therefore, this study investigated the comparative influences of biochars, including Acacia saligna （AS）, Simcoa jarrah （S J） and Wundowie jarrah （W J）, mineral fertiliser with microbes （MF ＋ M）, biochar-mineral complex （BMC） and their combination on mycorrhizal colonisation, growth and nutrition of wheat in a glasshouse experiment and sorghum in field conditions. BMC ＋ MF ＋ M treatment produced higher mycorrhizal colonisation than MF ＋ M alone, indicating that BMC had a significant role in increasing mycorrhizal colonisation. SJ （treated with acetic acid） and MF ＋ M treatments, as well as AS ＋ MF ＋ M application, showed similar effects on mycorrhizal colonisation, but lower colonisation than the BMC ＋ MF ＋ M treatment. Ovcrall~ the BMC ＋ MF ＋ M treatment supported the maximum shoot, root and total plant dry weight followed by AS ＋ MF ＋ M and WJ ＋ MF ＋ M. The MF ＋ M treatment had the maximum shoot N and K concentrations, while BMC ＋ MF ＋ M application had the maximum shoot P concentration. AS ＋ MF -4- M and WJ ＋ MF ＋ M treatments supported the maximum N uptake by wheat shoots, while BMC ＋ MF ＋ M supported the maximum P uptake. The results showed that biochars and BMCs could increase mycorrhizal colonisation, plant growth and nutrient uptake of wheat, particularly N, P, K, S and Zn. The field experiment confirmed that BMC application at a rate of 300 kg ha-1 could increase the yield of irrigated sorghum on a loam soil and provide better applied P use efficiency compared to a water-soluble fertiliser alone. These results indicated that biochar-based fer

关键词： carbon sequestration nutrient uptake P use efficiency soil biological fertility wheat production

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Applicability of semi-destructive method to derive allometric model for estimating aboveground biomass and carbon stock in the Hill zone of Bangladesh

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Journal of Forestry Research 2020年第4期31卷 1235-1245页

作者： Hossain Mahmood Mohammad Raqibul Hasan Siddique S.M.Zahirul Islam S.M.Rubaiot Abdullah Henry Matieu Md.Zaheer Iqbal Mariam Akhter Forestry and Wood Technology discipline Khulna UniversityKhulna 9208Bangladesh Forest Inventory Division Bangladesh Forest Research InstituteChittagong 4000Bangladesh Food and agriculture Organization Rome 00153Italy Bangladesh Forest Department Bana bhabanAgargaonDhaka 1207Bangladesh

Biomass estimation using allometric models is a nondestructive and popular *** of an allometric model can influence the accuracy of biomass *** Forest Department initiated a nationwide forest inventory to assess biomass and carbon stocks in trees and *** relationship between carbon storage and sequestration in a forest has implications for climate change mitigation in terms of the carbon sink in *** part of the national forest inventory,we aimed to derive multi-species biomass models for the hill zone of Bangladesh and to determine the carbon concentration in tree components(leaves,branches,bark and stem).In total,175 trees of 14 species were sampled and a semi-destructive method was used to develop a biomass model,which included development of smaller branch(base dia<7 cm)biomass allometry and volume estimation of bigger branches and *** best model of leaf,branches,and bark showed lower values for adjusted R2(0.3152-0.8043)and model efficiency(0.436-0.643),hence these models were not recommended to estimate *** best fit model of stem and total aboveground biomass(TAGB)showed higher model efficiency 0.948 and 0.837,respectively,and this model was recommended for estimation of tree biomass for the hill zone of *** best fit allometric biomass model for stem was Ln(Stem)=-10.7248+1.6094*Ln(D)+1.323*Ln(H)+1.1469*Ln(W);the best fit model for TAGB was Ln(TAGB)=-6.6937+0.809*Ln(D^2*H*W),where DBH=Diameter at Breast Height,H=Total Height,W=Wood *** two most frequently used pan-tropical biomass models showed lower model efficiency(0.667 to 0.697)compared to our derived TAGB *** best fit TAGB model proved applicable for accurate estimation of TAGB for the hill zone of *** concentration varied significantly(p<0.05)by species and tree *** concentration(48-49%)of carbon was recorded in the tree stem.

关键词： Allometry Bangladesh Biomass Carbon Forest inventory

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Spatio-temporal Evolution Characteristics and Driving Forces of Winter Urban Heat Island:A Case Study of Rapid Urbanization Area of Fuzhou City,China

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Chinese Geographical Science 2024年第1期34卷 135-148页

作者： WANG Zili LU Chunyan SU Yanlin SU Yue YU Qianru LI Wenzhe YANG Nuocheng College of Computer and Information Sciences Fujian Agriculture and Forestry UniversityFuzhou350002China Key Laboratory of Smart agriculture and Forestry(Fujian agriculture and Forestry University) Fujian Province UniversityFuzhou350002China College of Forestry Fujian Agriculture and Forestry UniversityFuzhou350002China

Under the influence of anthropogenic and climate change,the problems caused by urban heat island(UHI)has become increasingly *** order to promote urban sustainable development and improve the quality of human settlements,it is significant for exploring the evolution characteristics of urban thermal environment and analyzing its driving *** the Landsat series images as the basic data sources,the winter land surface temperature(LST)of the rapid urbanization area of Fuzhou City in China was quantitatively retrieved from 2001 to *** comprehensively the standard deviation ellipse model,profile analysis and GeoDetector model,the spatio-temporal evolution characteristics and influencing factors of the winter urban thermal environment were systematically *** results showed that the winter LST presented an increasing trend in the study area during 2001–2021,and the winter LST of the central urban regions was significantly higher than the *** was a strong UHI effect from 2001 to 2021with an expansion trend from the central urban regions to the suburbs and coastal areas in space *** LST of green lands and wetlands are significantly lower than croplands,artificial surface and unvegetated *** and water bodies had a significant mitigation effect on UHI,especially in the *** winter UHI had been jointly driven by the underlying surface and socio-economic factors in a nonlinear or two-factor interactive enhancement mode,and socio-economic factors had played a leading *** research could provide data support and decision-making references for rationally planning urban layout and promoting sustainable urban development.

关键词： winter urban heat island(UHI) rapid urbanization area land surface temperature(LST)retrieval profile analysis GeoDetector model Fuzhou City,China

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Developing More Effective Enhanced Biochar Fertilisers for Improvement of Pepper Yield and Quality

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Pedosphere 2015年第5期25卷 703-712页

作者： YAO Chunxue Stephen JOSEPH LI Lianqing PAN Genxing Yun LIN Paul MUNROE Ben PACE Sarasadat TAHERYMOOSAVI Lukas VAN ZWIETEN Torsten THOMAS Shaun NIELSEN Jun YE Scott DONNE Institute of Resources Ecosystem and Environment of Agriculture Nanjing Agricultural University discipline of Chemistry University of Newcastle School of Materials Science and Engineering University of New South Wales New South Wales Department of Primary Industries School of Biotechnology and Biomolecular Sciences & Centre for Marine Bio-Innovation University of New South Wales

Utilization of biochar at high application rates can increase soil C and crop yields, decrease greenhouse gas emissions and reduce nutrient run-off from soils. However, the high application rate of 10 t ha-1 may not return a profit to the farmer due to the high cost of biochar. In this study biochar was modified through pre-treating the biomass and post-treating with phosphoric acid, minerals and different chemical fertilisers to study the effects of two new enhanced biochar fertilisers on the yield and quality of green pepper in a field experiment with 5 fertilisation treatments and 3 replications. The two new biochar fertilisers significantly （P 〈 0.05） increased the yield of green pepper （11.33-11.47 t ha-l）, compared with the conventional chemical fertiliser （9.72 t ha-l）. The biochar fertiliser treatments improved the vitamin C content of green pepper from 236.99 to 278.28 mg kg-1, and also significantly （P 〈 0.05） reduced the nitrate content from 132.32 to 101.92 mg kg-1, compared with chemical fertiliser. This study indicated that, compared to the use of conventional chemical fertiliser, all of the biochar fertiliser treatments could significantly improve the yield and quality of green pepper.

关键词： bentonite clay chemical fertiliser nitrate content phosphoric acid vitamin C content wheat straw

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