作者：
Chen, Junjie;Gao, Jing;Zhang, Lingling;Zhang, Lin
期刊：
FRONTIERS IN PLANT SCIENCE,2023年14:1144853 ISSN：1664-462X
通讯作者：
Zhang, L.
作者机构：
[Chen, Junjie; Zhang, Lin] Cent South Univ Forestry & Technol, Key Lab Cultivat & Protect Nonwood Forest Trees, Minist Educ, Changsha, Peoples R China.;[Gao, Jing; Chen, Junjie; Zhang, Lingling] Chinese Acad Sci, Innovat Acad Seed Design, CAS Key Lab Plant Germplasm Enhancement & Specialt, Wuhan Bot Garden, Wuhan, Peoples R China.;[Gao, Jing; Zhang, Lingling] Chinese Acad Sci, Ctr Econ Bot, Core Bot Gardens, Wuhan, Peoples R China.;[Gao, Jing] Univ Chinese Acad Sci, Beijing, Peoples R China.
通讯机构：
[Zhang, L.] K;[Zhang, L.] C;CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, China;Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, China
关键词：
tung tree (Vernicia fordii);stearoyl-acyl carrier prote in Delta 9 desaturase (SAD);oleic Acid;the alpha-eleostearic acid;oil accumulation
摘要：
Camellia oleifera, a woody plant indigenous to China, is primarily utilized for the production of cooking oil. However, it is frequently afflicted by anthracnose, a highly detrimental disease that leads to significant annual losses. Colletotrichum fructicola is the predominant etiological agent responsible for anthracnose in Ca. oleifera. Additionally, our investigation has revealed that a bZIP transcription factor CfHac1 in C. fructicola governs the pathogenicity and response to endoplasmic reticulum stress. In this study, we conducted an investigation of the role of the CfPDI1 gene in C. fructicola, which was significantly downregulated in & UDelta;Cfhac1 under endoplasmic reticulum stress. The CfPDI1 gene was deleted, resulting in reduced vegetative growth, conidiation, appressoria formation, and appressorium turgor generation. Furthermore, it was observed that the & UDelta;Cfpdi1 mutant exhibited impaired responsiveness to endoplasmic reticulum stresses, and the expression of UPR-related genes in C. fructicola was influenced by CfPdi1. Cytological investigations indicated that CfPdi1 is localized in the endoplasmic reticulum. Further analysis revealed that the & UDelta;Cfpdi1 mutant displays significantly reduced pathogenicity in Ca. oleifera. Taken together, this study illustrated crucial functions of CfPdi1 in development, response to ER stress, autophagy, and pathogenicity in C. fructicola.
作者机构：
[Chen, Ming; Liu, Yiyao; Yuan, Jun; Zhou, Junqin; Tan, Xiaofeng] Cent South Univ Forestry & Technol, Key Lab Cultivat & Protect Non Wood Forest Trees, Minist Educ, Changsha 410004, Hunan, Peoples R China.;[Yuan, Jun] Cent South Univ Forestry & Technol, 498 South Shaoshan Rd, Changsha 410004, Peoples R China.
通讯机构：
[Jun Yuan] K;Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, People’s Republic of China<&wdkj&>Central South University of Forestry and Technology, Changsha, China
摘要：
Nitrogen (N) is an essential nutrient for plant growth, but its availability is limited in the soil of subtropical ecosystems. Identifying the genes responsible for N utilization efficiency (NUE) in Camellia oleifera is important because of the excessive cost of N fertilization. To investigate this, we performed RNA-sequencing of C. oleifera roots to reveal the genome-wide gene expression in response to three synthetic forms of N, namely ammonium (NH + 4), nitrate (NO- 3), and ammonium nitrate (NH4NO3), provided to three independent groups of plants. The expression of several ammonium and nitrate transporters increased slightly in the NO- 3-treated group and significant changes were observed in the NH + 4- and NH4NO3-treated groups. The opposite expressions of some key N transport and assimilation genes under the different N treatments suggested that C. oleifera might have different N utilization pathways for the different N forma. Additionally, the genes involved in N transport and assimilation account for the different N uptake and for different concentrations of glutamate and glutamine in plants and the metabolomic data showed that the accumulation of both amino-acids was promoted by the NH + 4 and NH4NO3 treatments but not by the NO- 3 treatment. These findings will help improve the NUE of C. oleifera and guide its agricultural production in the future.
作者机构：
[Yang, Peisong; Zhang, Tingchen; Long, Jiangping; Liu, Zhaohua; Chen, Li; Lin, Hui] Cent South Univ Forestry & Technol, Res Ctr Forestry Remote Sensing & Informat Engn, Changsha 410004, Peoples R China.;[Yang, Peisong; Zhang, Tingchen; Long, Jiangping; Liu, Zhaohua; Chen, Li; Lin, Hui] Key Lab Forestry Remote Sensing Based Big Data & E, Changsha 410004, Peoples R China.;[Yang, Peisong; Zhang, Tingchen; Long, Jiangping; Liu, Zhaohua; Chen, Li; Lin, Hui] Key Lab State Forestry Adm Forest Resources Manage, Changsha 410004, Peoples R China.
通讯机构：
[Long, JP ] C;Cent South Univ Forestry & Technol, Res Ctr Forestry Remote Sensing & Informat Engn, Changsha 410004, Peoples R China.;Key Lab Forestry Remote Sensing Based Big Data & E, Changsha 410004, Peoples R China.;Key Lab State Forestry Adm Forest Resources Manage, Changsha 410004, Peoples R China.
关键词：
aboveground biomass;transfer learning;prediction models;spatial-temporally transferable;relative change in R-squared
摘要：
Forests, commonly viewed as the Earth’s lungs, play a crucial role in mitigating greenhouse gas emissions, regulating the globe, and maintaining ecological equilibrium. The assessment of aboveground biomass (AGB) serves as a pivotal indicator for evaluating forest quality. By integrating remote sensing images with a small number of ground-measured samples to map, forest AGBs can significantly reduce time and labor costs. Current research mainly focuses on improving the accuracy of mapping forest AGBs, such as integrating multiple-sensors remote sensing data and models. However, due to uncertainties associated with remote sensing images and complexities inherent in forest structures, the accuracy of mapping forest AGBs is constrained by both the quantity and distribution of ground samples available. The development of transfer learning methods can fully utilize ground-based measurement data and enable the application of samples across regions and time. To evaluate the potential of transfer learning methods in mapping forest AGBs, this study conducted a spatial–temporal transfer of spectral variables (SVs) and prediction models (PMs) using a direct-push transfer method, and a new evaluation metric, relative change of R-squared (RCRS), was proposed to assess the transferability of SVs and PMs. The results showed that the transferability of SVs and PMs in the spatial target domain is obviously greater than that in the temporal target domain. Compared to the temporal target domain, the RCRS for transfer SVs in the spatial target domain was lower by 20.89 (oak) and 20.88 (Chinese fir) and for transfer PMs by 24.16 (oak) and 24.79 (Chinese fir). Tree species is also one of the main factors affecting the spatial and temporal transfer of SVs, and it is challenging to transfer SVs between different tree species. The results also show that nonparametric models have better generalization performance, and their transferability is much greater than that of parametric models.
摘要：
Phytopathogens pose a devastating threat to the productivity and yield of crops by causing destructive plant diseases in natural and agricultural environments. Hemibiotrophic pathogens have a variable-length biotrophic phase before turning to necrosis and are among the most invasive plant pathogens. Plant resistance to hemibiotrophic pathogens relies mainly on the activation of innate immune responses. These responses are typically initiated after the plant plasma membrane and various plant immune receptors detect immunogenic signals associated with pathogen infection. Hemibiotrophic pathogens evade pathogen-triggered immunity by masking themselves in an arms race while also enhancing or manipulating other receptors to promote virulence. However, our understanding of plant immune defenses against hemibiotrophic pathogens is highly limited due to the intricate infection mechanisms. In this review, we summarize the strategies that different hemibiotrophic pathogens interact with host immune receptors to activate plant immunity. We also discuss the significant role of the plasma membrane in plant immune responses, as well as the current obstacles and potential future research directions in this field. This will enable a more comprehensive understanding of the pathogenicity of hemibiotrophic pathogens and how distinct plant immune receptors oppose them, delivering valuable data for the prevention and management of plant diseases.
通讯机构：
[Huan Xiong; Feng Zou] K;Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Fores try and Technology, Changsha 410004, Hunan, China
摘要：
In this study, we developed a method for synthesizing silver nanoparticles (AgNPs) using aqueous assembly assay and anchoring them with camellia seed cake polyphenols (CPs). Zeta potential analysis demonstrated a higher binding affinity of CP-AgNPs to Penicillium digitatum, which could be attributed to the interaction between the hydroxyl group of CP-AgNPs and the polysaccharide present on the fungal cell wall. Compared to AgNPs, the CP-AgNPs outperformed conventional AgNPs in antifungal activity against P. digitatum. The mechanism underlying this antimicrobial effect involves raising the level of oxidative stress by regulating the expression levels of oxidative stress response genes. In addition, CP-AgNPs/CS showed highly effective in reducing citrus decay levels during chamber storage. In conclusion, the use of CPs as anchoring agent in the in-situ aqueous assembly of CP-AgNPs improved their biocompatibility and antimicrobial properties. CP-AgNPs hold great promise for applications in fruit preservation, especially citrus preservation.
摘要：
Regulation of gene expression underpins gene function and is essential for regulation of physiological roles. Epigenetic modifications regulate gene transcription by physically facilitating relaxation or condensation of target loci in chromatin. Transcriptional corepressors are involved in chromatin remodeling and regulate gene expression by establishing repressive complexes. Genetic and biochemical studies reveal that a member of the Groucho/Thymidine uptake 1 (Gro/Tup1) corepressor family, HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENE 15 (HOS15), is recruited via the evening complex (EC) to the GIGANTEA (GI) promoter to repress gene expression, and modulating flowering time. Therefore, HOS15 connects photoperiodic pathway and epigenetic mechanism to control flowering time in plants. In addition, growing body of evidence support a diverse roles of the epigenetic regulator HOS15 in fine-tuning plant development and growth by integrating intrinsic genetic components and various environmental signals.
通讯机构：
[Jienan He] C;College of Forestry, Central South University of Forestry & Technology, Changsha 410004, China<&wdkj&>Author to whom correspondence should be addressed.
期刊：
Science of The Total Environment,2023年878:163187 ISSN：0048-9697
通讯作者：
Lichao Wu<&wdkj&>Lijun Chen
作者机构：
[Ke, Qin; Chen, Bohao; Wang, Ye; Chen, Lijun; Wu, Lichao] Cent South Univ Forestry, Technol Key Lab Soil & Water Conservat & Deserti f, Changsha 410004, Hunan, Peoples R China.;[Ke, Qin; Chen, Bohao; Wang, Ye; Chen, Lijun; Wu, Lichao] Cent South Univ Forestry & Technol, Key Lab Cultivat & Protect Nonwood Forest Trees, Minist Educ, Changsha 410004, Hunan, Peoples R China.;[Shi, Yutian; He, Chun] State Owned Gaofeng Forest Farm, Nanning 530001, Guangxi, Peoples R China.;[Li, Hui] Guangxi Diyuan Zhiben Fertilizer Co Ltd, Nanning 530006, Guangxi, Peoples R China.;[Tang, Yabin] Guangxi Zhongnan Linhai Biotechnol Co Ltd, Nanning 530000, Guangxi, Peoples R China.
通讯机构：
[Lichao Wu; Lijun Chen] C;Central South University of Forestry and Technology a) Key Laboratory of Soil and Water Conservation and Desertification Combating of Hunan Province;b) Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Changsha 410004, Hunan, China
摘要：
The relationship between glomalin-related soil protein (GRSP) and soil aggregation has been a hot topic of research for its close link to soil stability and quality. However, the short-term cultivation of Eucalyptus poses serious threats to soil stability and nutrient stocks, and the effects of GRSP on soil aggregate stability and macronutrient accumulation remain unclear. The aim is to clarify the potential mechanisms affecting soil aggregate stability and macronutrient accumulation in short-term Eucalyptus plantations. Five Eucalyptus urophylla × Eucalyptus grandis plantations with different cultivation periods (1-5years) in this study were investigated, and a native evergreen broadleaf forest (0year) was selected as control. The mean weight diameter index increased in the first 3years and then significantly decreased during 5years cultivation of Eucalyptus. Soil organic carbon (SOC) and total nitrogen also decreased after planting Eucalyptus for 3years, but variation in total phosphorus was not obvious. The relative abundance of Glomeraceae and Claroideoglomeraceae decreased in the 5-year-old Eucalyptus plantations and was positively correlated with GRSP content. In pathway modeling, nutrient-acquisition enzyme activities positively affected GRSP and macronutrient content. Total GRSP (T-GRSP) had higher total effects than easily extractable GRSP on soil aggregate stability, and positively correlated with SOC in macroaggregates. Both T-GRSP and SOC had positive and direct effects on soil aggregate stability. Variance partitioning analysis further explained the contribution of GRSP and SOC to aggregate stability, particularly in >2 and 2-0.25mm macroaggregates. Our results suggested that GRSP was directly associated with SOC content and soil aggregate stability, and was a potential key factor affecting soil aggregate stability in Eucalyptus plantations. Improving T-GRSP and SOC are efficient approaches for preventing the gradual deterioration of soil aggregate stability. Short-term cultivation should be carefully used in Eucalyptus plantations, and a new cultivation period is needed.
期刊：
Forest Ecology and Management,2023年544:121189 ISSN：0378-1127
通讯作者：
Wu, Lei;Sun, H
作者机构：
[Liu, Yu; Liu, Shuai; Wu, Lei; Sun, Hua] Cent South Univ Forestry & Technol, Changsha 410004, Peoples R China.;[Yi, Xuan] Hunan Qingyanghu State Own Forest Farm, Ningxiang 410627, Peoples R China.;[Sun, Hua] Cent South Univ Forestry & Technol, Res Ctr Forestry Remote Sensing & Informat Engn, Changsha 410004, Peoples R China.;[Sun, Hua] Key Lab Forestry Remote Sensing Based Big Data & E, Changsha 410004, Peoples R China.
通讯机构：
[Wu, L; Sun, H ] C;Cent South Univ Forestry & Technol, Changsha 410004, Peoples R China.;Cent South Univ Forestry & Technol, Res Ctr Forestry Remote Sensing & Informat Engn, Changsha 410004, Peoples R China.;Key Lab Forestry Remote Sensing Based Big Data & E, Changsha 410004, Peoples R China.
关键词：
Chinese fir;Environmental conditions;HDR model;Interaction effects;Machine learning;Neighborhood competition
