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FLOWERING LOCUS T(FT)in Photosensitive Type Chrysanthemum Accelerates Flowering in Arabidopsis

Phyton-International Journal of Experimental Botany 2024年第4期93卷 819-830页

作者： Fenglan Wang Zhenyuan Cai Zhimei Li Shilong Zhang Honghui Luo Qing Wu Hanhan Xia Yanhong Guo college of horticulture and landscape architecture Zhongkai University of Agriculture and EngineeringGuangzhou510225China

FLOWERING LOCUS T(FT)is an important factor for integrating flowering signals through the photoperiod pathway,which significantly promotes *** chrysanthemum varieties are short-day plants,sensitive to the photoperiod,which limits their ornamental and annual production *** this study,we aim to analyze the nutrients and flowering-related genes of chrysanthemums with different photoperiod types and to clone and verify the function of the flowering-related gene *** found that the formation of floral buds requires the accumulation of starch while consuming soluble sugars and the expression patterns of flowering-related genes GIGANTEA(GI),CONSTANS(CO),and FT in ***‘Zilian’and ***‘Zihongtuogui’had a certain synchronization during floral buds differentiation according to our quantitative validation,and the expression levels of CmGI,CmCO and CmFT in ***‘Zihongtuogui’were higher than those in ***.‘Zilian’in the later stage of *** was cloned from photosensitive ***‘Zihongtuogui’and polypeptide alignment and phylogenetic analysis showed that CmFT was clustered in FT-like *** further functional verification,we obtained two Arabidopsis transgenic *** results showed that CmFT transgenic ft mutant lines can significantly accelerate flowering in ***,we can initially confirm that CmFT plays an important role in promoting flowering,which may be the key reason for the photosensitivity of ***‘Zihongtuogui’.Overall,the results of this study are of great importance in revealing the flowering mechanism of different photoperiod types of chrysanthemums.

关键词： Chrysanthemum morifolium flowering-related genes CmFT photoperiod pathway heterologous expression

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Ectomycorrhizal fungi and dark septate endophyte inoculation improve growth and tolerance of Pinus tabulaeformis under cadmium stress

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Pedosphere 2024年第2期34卷 473-483页

作者： Yong ZHOU Yanyan ZHENG Pengwei LI Lingjie XU Qiang FU college of landscape architecture and Tourism Hebei Agricultural UniversityBaoding 071000China

Forest trees can establish symbiotic associations with dark septate endophytes(DSEs)and ectomycorrhizal fungi(ECMF)***,the combined effects of these two fungi on the growth and cadmium(Cd)tolerance of host plants remain largely *** address this knowledge gap,a pot experiment was conducted to examine the effects of the interaction between an ECMF strain(Suillus granulatus)and a DSE strain(Pseudopyrenochaeta sp.)on Pinus tabulaeformis under Cd stress,by assessing plant growth and physiological parameters,nutrient uptake,and soil ***,the colonization rates of both fungal strains were found to increase in response to Cd stress,with the extent of this increase being influenced by the specific fungal species and the Cd level in the *** to the non-inoculation treatment,single inoculation with fungal strain resulted in enhanced biomass,root development,and nutrient contents in *** seedlings under Cd ***,a synergistic effect was observed when these seedlings were co-inoculated with *** and Pseudopyrenochaeta sp.,as indicated by significantly greater measurements in various indicators compared to both the single and non-inoculation *** inoculation effectively regulated the antioxidant defense responses and photosynthesis of *** seedlings subjected to Cd stress,particularly in the co-inoculation *** addition,fungal inoculation facilitated the Cd accumulation in ***,suggesting a promising potential for the implementation of bioremediation strategies in the areas contaminated with heavy *** findings from this study indicate that the utilization of root symbiotic fungi obtained from stress environments could potentially enhance the growth performance and tolerance of *** towards heavy metals,and co-inoculation of both fungal groups may result in even more pronounced synergistic effects on the overall fitness of the plant.

关键词： antioxidant defense response colonization rate fungal inoculation heavy metal tolerance physiological parameter root symbiotic fungi soil property

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A mutation in the promoter of the yellow stripe-like transporter gene in cucumber results in a yellow cotyledon phenotype

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Journal of Integrative Agriculture 2024年第3期23卷 849-862页

作者： Jiawei Pan Jia Song Rahat Sharif Xuewen Xu Shutong Li Xuehao Chen School of horticulture and landscape architecture Yangzhou UniversityYangzhou 225009China Institute of Vegetables Tianjin Academy of Agricultural SciencesTianjin 300384China

Leaf color mutants in higher plants are considered to be ideal materials for studying the chlorophyll biosynthesis,photosynthesis mechanism and chloroplast ***,we identified a spontaneous mutant,yc412,in cultivated cucumber that exhibited yellow *** yellow-lethal mutant was diagnosed with an abnormal chloroplast ultrastructure,and reduced photosynthetic capacity and pigment *** bulked segregant analysis-based whole-genome sequencing and fine genetic mapping,we narrowed the yellow cotyledons (yc) locus to a 96.8 kb interval on chromosome *** resequencing and molecular cloning,we showed that Csyc is a potential candidate gene,which encodes a yellow stripe-like (YSL) *** T to C mutation in the promoter region of Csyc caused the yellow cotyledon phenotype in *** to YZU027A (WT),the expression of Csyc was significantly downregulated in the cotyledons of *** of Csyc in cucumber via virus-induced gene silencing resulted in chlorotic leaves,mainly by suppressing the chlorophyll ***,a comparative transcriptome analysis revealed that chloroplast-related genes and chlorophyll biosynthesis genes were significantly downregulated in yc412 *** results provide new insights into the molecular function of the YSL transporter in plant chloroplast development and chlorophyll synthesis.

关键词： cucumber yellow-lethal cotyledons chloroplast development yellow stripe-like transporter

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Functional prediction of tomato PLATZ family members and functional verification of Sl PLATZ17

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Journal of Integrative Agriculture 2024年第1期23卷 141-154页

作者： Min Xu Zhao Gao Dalong Li Chen Zhang Yuqi Zhang Qian He Yingbin Qi He Zhang Jingbin Jiang Xiangyang Xu Tingting Zhao college of horticulture and landscape architecture Northeast Agricultural UniversityHarbin 150030China Key Laboratory of Biology and Genetic Improvement of Horticultural Crops(Northeast Region) Ministry of Agriculture and Rural AffairsHarbin 150030China

PLATZ is a novel zinc finger DNA-binding protein that plays an important role in regulating plant growth and development and resisting abiotic ***,there has been very little research on the function of this family gene in tomatoes,which limits its application in germplasm resource ***,the PLATZ gene family was identified and analyzed in tomato,and its roles were predicted and verified to provide a basis for in-depth research on SlPLATZ gene *** this study,the PLATZ family members of tomato were identified in the whole genome,and 19 SlPLATZ genes were *** prediction was conducted based on gene and promoter structure analysis and RNA-seq-based expression pattern *** genes that responded significantly under different abiotic stresses or were significantly differentially expressed among multiple tissues were screened as functional gene ***17 was selected for functional verification by experiment-based *** results showed that the downregulation of SlPLATZ17 gene expression reduced the drought and salt tolerance of tomato *** plants overexpressing SlPLATZ17 had larger flower sizes and long,thin petals,adjacent petals were not connected at the base,and the stamen circumference was *** study contributes to understanding the functions of the SlPLATZ family in tomato and provides a reference for functional gene screening.

关键词： tomato PLATZ family abiotic stresses plant development

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Identification and Molecular Characterization of the Alkaloid Biosynthesis Gene Family in Dendrobium catenatum

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Phyton-International Journal of Experimental Botany 2024年第1期93卷 81-96页

作者： Liping Yang Xin Wan Runyang Zhou Yingdan Yuan college of horticulture and landscape architecture Yangzhou UniversityYangzhouChina Jiangsu Academy of Forestry NanjingChina Jiangsu Yangzhou Urban Forest Ecosystem National Observation and Research Station YangzhouChina

As one of the main active components of Dendrobium catenatum, alkaloids have high medicinal value. The physicochemicalproperties, conserved domains and motifs, phylogenetic analysis, and cis-acting elements of the genefamily members in the alkaloid biosynthesis pathway of D. catenatum were analyzed by bioinformatics, and theexpression of the genes in different years and tissues was analyzed by qRT-PCR. There are 16 gene families,including 25 genes, in the D. catenatum alkaloid biosynthesis pathway. The analysis of conserved domains andmotifs showed that the types, quantities, and orders of domains and motifs were similar among members ofthe same family, but there were significant differences among families. Phylogenetic analysis indicated that thegene family members showed some evolutionary conservation. Cis-acting element analysis revealed that therewere a large number of light-responsive elements and MYB (v-myb avian myeloblastosis viral oncogene homolog)-related elements in these genes. qRT-PCR showed that expressions of gene family members involved in alkaloidsynthesis were different in different years and tissues of D. catenatum. This study provides a theoretical basisfor further exploration of the regulatory mechanisms of these genes in the alkaloid biosynthesis of D. catenatum.

关键词： Dendrobium catenatum gene family alkaloid biosynthesis

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Insights into the dwarfing mechanism of pear(Pyrus betulaefolia) based on anatomical and structural analysis using X-ray scanning

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Horticultural Plant Journal 2024年第2期10卷 355-366页

作者： Lili Dong Chuxuan Yang Jing Wang Jingjing Li Mei Zhao Dingli Li Zhiyun Qiu Chunhui Ma Zhenhua Cui college of horticulture Qingdao Agricultural UniversityQingdaoShandong 266109China college of landscape and Forestry Qingdao Agricultural UniversityQingdaoShandong 266109China

The lack of a suitable rootstock to control scion growth has limited the development of high-density plantations in pear production, which is partly attributed to poor understanding of the dwarfing mechanism. In the present study, the rootstock of the dwarf-type pear (Pyrus betulaefolia)PY-9’ was identified and used as the material for anatomical ***-9’ grew to half the tree height of the normal cultivar Zhengdu’, along with fewer internodes and shorter length. Significant differences in growth rate betweenPY-9’ andZhengdu’ were detected at approximately 30 days after full bloom, which corresponded with the time of the greatest difference in water potential between the dwarf and normal ***-9’ showed a higher photosynthetic rate thanZhengdu’. Anatomical analysis showed thatPY-9’ had higher area ratios of both phloem and xylem and more developed vascular tissues thanZhengdu’. The three-dimensional reconstructed skeleton of the xylem from X-ray computed tomography scanning revealed greater intervessel connectivity inZhengdu’ than inPY-9’, which could contribute to the more vigorous growth ofZhengdu’. This study thus provides the first comparison of the microstructural properties of xylem elements between a dwarfing-type and vigorous-type pear rootstock, providing new insights into the dwarfing mechanism in pear and facilitating breeding of dwarf pear rootstocks to increase crop productivity.

关键词： Pyrus betulaefolia Anatomical analysis Dwarfing mechanism Intervessel connectivity Rootstock

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Associative cultural landscape approach to interpreting traditional ecological wisdom:A case of Inuit habitat

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Frontiers of Architectural Research 2024年第1期13卷 79-96页

作者： Peng Zhang Shuai Li Department of landscape architecture College of Architecture and Urban PlanningTongji UniversityShanghai 200092China

Global climate change and the accelerated melting of glaciers have raised concerns about the ability to manage ice-snow ***,human ancestors have mastered the ecological wisdom of working with ice-snow environments,but the phenomenon has not yet been articulated in cultural landscape methodologies that emphasize“nature-culture relevance”.The challenging living environment often compels indigenous people to form a strong bond with their surroundings,leading to the creation of long-term ecological wisdom through synergistic relationships with the *** ecological environment is conceptualized as a cognitive space in the form of the landscape,with which the aboriginal community norms and individual spirits continually *** interactions generate numerous non-material cultural evidences,such as culture,art,religion,and other ideological aspects of the *** evidences symbolize the intellectual outcome of the relationship between humans and the landscape,and they create the“spiritual relevance”through personification and *** aim of the study is to explore the traditional ecological wisdom of the Inuit people who live in the harsh Arctic,and analyze the Inuit’s interaction with the landscape through the lens of“associative cultural landscape”,and decode the survival experience that the Inuit have accumulated through their long-term synergy with the Arctic *** findings focus on the synergy between the Inuit and the ice-snow landscape,examining the knowledge and ecological wisdom that the Inuit acquire from the ice-snow *** goal is to develop a perspective of the ecological environment from the viewpoint of aboriginal people and establish a methodology,model,and framework for“associative cultural landscape”that incorporates ethnic non-material cultural *** the results,a total of nine models for interpreting traditional Inuit ecological wisdom are generated based on the“diamond

关键词： landscape architecture Associative cultural landscape Nature-culture relevance Cultural landscape Traditional ecological wisdom Non-material cultural evidence Methodology Habitat Living environment Ice-snow landscape

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Establishing VIGS and CRISPR/Cas9 techniques to verify RsPDS function in radish

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Journal of Integrative Agriculture 2024年第5期23卷 1557-1567页

作者： Jiali Ying Yan Wang Liang Xu Tiaojiao Qin Kai Xia Peng Zhang Yinbo Ma Keyun Zhang Lun Wang Junhui Dong Lianxue Fan Yuelin Zhu Liwang Liu National Key Laboratory of Crop Genetics&Germplasm Enhancement and Utilization/Key Laboratory of Horticultural Crop Biology and Genetic Improvement(East China)of Ministry of Agriculture and Rural Affairs/college of horticulture Nanjing Agricultural UniversityNanjing210095China college of horticulture and landscape architecture Yangzhou UniversityYangzhou 225009China college of Life Sciences Nanjing Agricultural UniversityNanjing 210095China

Virus-induced gene silencing(VIGS)and clustered regularly interspaced short palindromic repeats/CRISPR-associated protein(CRISPR/Cas)systems are effective technologies for rapid and accurate gene function verification in modern plant ***,the investigation of gene silencing and editing in radish remains *** this study,a bleaching phenotype was generated through the knockdown of RsPDS using tobacco rattle virus(TRV)-and turnip yellow mosaic virus(TYMV)-mediated gene silencing *** TYMV-mediated gene silencing efficiency was higher than the TRV-based VIGS system in *** expression level of RsPDS was significantly inhibited using VIGS in'NAU-067'radish *** rootless seedlings of‘NAU-067'were infected with Agrobacterium rhizogenes using the 2300GN-Ubi-RsPDS-Cas9 vector with two target *** adventitious roots were blue with GUs staining,and four of these adventitious roots were edited at target sequence 1 of the RsPDS gene as indicated by Sanger ***,albino lines were generated with ***-mediated transformation of radish *** base substitutions and three base deletions occurred at target sequence 2 in Line 1,and three base insertions and three base substitutions occurred at target sequence 1 in Line *** study shows that VIGS and CRISPR/Cas9 techniques can be employed to precisely verify the biological functions of genes in radish,which will facilitate the genetic improvement of vital horticultural traits in radish breeding programs.

关键词： Raphanus sativus L. VIGS CRISPR/Cas9 Agrobacterium rhizogenes A.tumefaciens RsPDS

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DIA-based proteome profiling with PRM verification reveals the involvement of ER-associated protein processing in pollen abortion in Ogura CMS cabbage

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Horticultural Plant Journal 2024年第3期10卷 755-770页

作者： Peiwen Wang Lin Zhu Ziheng Li Mozhen Cheng Xiuling Chen Aoxue Wang Chao Wang Xiaoxuan Zhang Key Laboratory of Biology and Genetic Improvement of Horticultural Crops(Northeast Region) Ministry of Agriculture and Rural AffairsNortheast Agricultural UniversityHarbinHeilongjiang 150030China college of horticulture and landscape architecture Northeast Agricultural UniversityHarbinHeilongjiang 150030China

Ogura cytoplasmic male sterility(Ogura CMS)is extensively applied in hybrid seed production in cruciferous ***,the posttranscriptional molecular basis of Ogura CMS in cruciferous crops remains ***,a data-independent acquisition-based proteomic approach coupled with a parallel reaction monitoring-based targeted proteomic assay was used to analyze the proteome dynamics of Ogura CMS cabbage line RM and its maintainer line RF during floral bud development to obtain insights into the mechanism underlying Ogura CMS in cruciferous crops.A total of 9162 proteins corresponding to 61464 peptides were identified in RM and RF floral *** proteomic fluctuation of RM was weaker than that of *** in protein expression between RM and RF gradually enlarged with floral bud *** continually up-regulated and eight continually down-regulated proteins were found in RM relative to RF throughout floral bud *** expressed proteins between RM and RF during floral bud development were implicated in the endoplasmic reticulum(ER)-associated protein processing pathway,in which most of them exhibited down-regulated expression in *** data suggest that ER-associated protein processing may be involved in pollen abortion in Ogura CMS cabbage by inhibiting the expression of critical *** findings not only deepen the understanding of the molecular mechanisms of Ogura CMS in cruciferous crops but also provide better guidance for applying Ogura CMS in the hybrid breeding of cruciferous crops.

关键词： Ogura cytoplasmic male sterility(Ogura CMS) Cabbage Data-independent acquisition(DIA) Parallel reaction monitoring(PRM) Pollen development

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An ecological perspective on Joseph Rock’s(1884-1962)plant collection activities in China

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Journal of Plant Ecology 2024年第4期17卷 100-113页

作者： Jifan Luo Ruozhi Huang Hai Yan Renwu Wu Shuai Liao Zhoubing Xiang Yongxi Zou Liangchen Shi Ke Wang Zhiyi Bao college of landscape architecture Zhejiang Agriculture and Forestry UniversityHangzhou 311300China Zhejiang Agriculture and Forestry University landscape architecture Institute Hangzhou 311300China South China Botanical Garden Chinese Academy of SciencesGuangzhou 510650China

In the early 20th century,numerous western botanists,often referred to as‘plant hunters’,embarked on ambitious expeditions to China,playing a crucial role in the study of botany and botanical *** their contributions,comprehensive assessments of their explorations are *** bridge this gap,this article focuses on the work of Joseph Charles Francis Rock,a notable figure in that *** work revisits Rock’s botanical expeditions within the broader context of botanical diversity *** outlines his historical experiences in collecting plants in China and enumerates the species composition and phenotypic traits of the plants he ***,it also analyzes the spatial distribution of the species,the completeness of his collection and the α-and β-diversity of the plants he *** findings reveal that Rock led four major botanical expeditions in China between 1922 and 1933,amassing a total of 28184 sheets and 16608 numbers across 204 families,1081 genera and 4231 *** focus was predominantly on ornamental species,which exhibit a variety of flower colors and *** collection work spanned 5 provinces,35 cities and 72 counties,with a notable concentration in the Hengduan Mountains,a current biodiversity *** study not only reconstructs Rock’s botanical legacy but also offers valuable historical data and fresh analytical insights for understanding contemporary plant *** contributes to the ongoing discourse on the importance of preserving plant diversity as a cornerstone of environmental sustainability.

关键词： Joseph Charles Francis Rock plant specimen collection history plant diversity plant collector

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