Tree physiology最新文献

{"title":"Effects of salicylic acid and brassinolide applications on salt tolerance in Cyclocarya paliurus: amelioration of oxidative stress.","authors":"Zijie Zhang, Huiying Jin, Kun Hong, Shengzuo Fang","doi":"10.1093/treephys/tpaf061","DOIUrl":"10.1093/treephys/tpaf061","url":null,"abstract":"<p><p>Soil salinity is a major constraint limiting plant growth globally. Cyclocarya paliurus (Batal.) Iljinsk, a valuable tree species, exhibits limited tolerance to salinity, hindering its cultivation in saline soils. This study investigates the effects of salicylic acid (SA) and brassinolide (BR) applications on improving salt tolerance in C. paliurus using physiological, cytological and molecular approaches. Results showed that the application of SA or BR significantly alleviated salt-induced growth inhibition and oxidative stress in C. paliurus, but the alleviating effects varied in their application doses. The applications of 0.5 mM SA or 1.0 mg L-1 BR enhanced seedling height by 89.7-97.4% and photosynthetic rate by 106.3-146.9% whereas reducing salt injury index by 36.0-38.0%, which is mainly via regulating the antioxidant enzyme activities, secondary metabolite accumulation and gene expressions associated with these processes. Visualization staining of H2O2, O2•- and cell viability also revealed that applications of 0.5 mM SA or 1.0 mg L-1 BR reduced the distributions of H2O2 and O2•- in leaves and invigorated cell viability under salt stress. Based on the analysis of reactive oxygen species metabolism and flavonoid biosynthesis pathways, we infer that the SA or BR applications could alleviate the salt-stress in C. paliurus mainly via regulating reactive oxygen species scavenging and the expression of genes related to antioxidant enzymes and secondary metabolite biosynthesis pathways. These findings suggest that proper exogenous applications of either SA or BR hold promise for improving the salt tolerance of C. paliurus.</p>","PeriodicalId":23286,"journal":{"name":"Tree physiology","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144080640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Populus salicinoids: A thriving subfield in the -omics era.","authors":"Noah J Kaufman, Jamie You, Brian G Fox, Shawn D Mansfield","doi":"10.1093/treephys/tpaf065","DOIUrl":"https://doi.org/10.1093/treephys/tpaf065","url":null,"abstract":"<p><p>Members of the salicaceous genus Populus are primarily used by plant biologists as a model system for understanding the genetic underpinnings of woody plant growth and development. Beyond their importance to those conducting developmental research, Populus spp. are key members of ecosystems in the Northern Hemisphere and show promise as a vital renewable source of biomass for sustainable biofuel production. This genus also produces a class of signature herbivore-deterring and medicinally significant phenolic glycosides, commonly referred to as salicinoids. Although salicinoids in Populus are primarily associated with defense against biotic disturbances, they have also been implicated in structuring the chemotaxonomy of Populus and Salicaceae, shaping endophytic microbiomes, directing abiotic stress responses, and participating in primary metabolism. Despite advancements in understanding these interactions through functional genomics and biotechnological techniques such as CRISPR/Cas9, much about their function and biosynthesis still remains obfuscated. Here, we summarize a global view of progress made in Populus salicinoid research, focusing particularly on studies conducted through a biotechnological lens, to elucidate the distribution, ecological significance, and biosynthesis of these compounds.</p>","PeriodicalId":23286,"journal":{"name":"Tree physiology","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144175017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elucidating the drought-responsive changes in Poplar cuticular waxes: A GWAS analysis of genes involved in fatty acid biosynthesis.","authors":"Melike Karaca-Bulut, Eliana Gonzales-Vigil, Wellington Muchero, Shawn D Mansfield","doi":"10.1093/treephys/tpaf060","DOIUrl":"https://doi.org/10.1093/treephys/tpaf060","url":null,"abstract":"<p><p>Drought and episodic drought events are major impending impacts of climate change, limiting the productivity of plants and especially trees due to their inherent high transpiration rates. One common mechanism used by plants to cope with drought stress is to change the composition of their leaf cuticular waxes. Cuticular waxes are essential for controlling non-stomatal water loss and are typically composed of a homologous series of very-long-chain fatty acid-derived compounds, as well as flavonoids, tocopherols, triterpenoids, and phytosterols. In this study, we compared the cuticular waxes of 339 natural accessions of Populus trichocarpa (black cottonwood) grown under control and drought conditions in a common garden. A Genome-Wide Association Study (GWAS) was then used to identify candidate genes associated with cuticular wax biosynthesis and/or its regulation. Although no major differences were observed in total wax load when subject to drought conditions, the amounts of the individual wax constituents were indeed responsive to drought. Specifically, changes in alkenes, alcohols, esters, and aldehydes were evident, and suggest that they contribute to the drought response/tolerance in poplar. GWAS uncovered several genes linked to fatty acid biosynthesis, including CER1, CER3, CER4, FATB, FAB1, FAR3, FAR4, KCS, and a homolog of SOH1, as well as other candidate genes that may be involved in coordinating the drought responses in poplar trees. Our findings provide new evidence that genotype-specific shifts in wax composition, rather than total wax accumulation, contribute to drought adaptation in poplar. Additionally, we show that genetic variation in key wax biosynthetic genes drives cuticular wax plasticity in P. trichocarpa under drought, identifying putative molecular targets for improving stress resilience in trees. This study expands our understanding of the adaptative mechanisms of the cuticle and their potential for enhancing drought tolerance in poplar species.</p>","PeriodicalId":23286,"journal":{"name":"Tree physiology","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144080642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Towards an official gene nomenclature for Populus trichocarpa.","authors":"Susan Tweedie, Stanton Martin, Elspeth Bruford","doi":"10.1093/treephys/tpaf054","DOIUrl":"https://doi.org/10.1093/treephys/tpaf054","url":null,"abstract":"<p><p>The HUGO Gene Nomenclature Committee (www.genenames.org), which has been naming human genes for over 40 years, has been tasked with establishing an official gene nomenclature system for Populus trichocarpa. Here we review the factors that must be considered when establishing gene nomenclature guidelines. What makes a good gene symbol, and what lessons can be learned from other nomenclature projects? Are there particular challenges associated with naming genes in poplar species? We look at the published gene symbols for Populus and highlight some issues, e.g., the same symbols being used for different genes, and diverse approaches to naming in gene families. What approaches can we take to resolving such conflicts? Since community adoption is key to the success of any nomenclature initiative, we have surveyed poplar researchers for feedback on draft guidelines and discuss some of the issues raised. Finally, we discuss the sustainability of such infrastructure projects-if we build it will they come and who will fund the ongoing work?</p>","PeriodicalId":23286,"journal":{"name":"Tree physiology","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144055284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physiological and molecular responses of poplar to salt stress and functional analysis of PagGRXC9 to salt tolerance.","authors":"Jiechen Wang, Changjun Ding, Congcong Cui, Jiaqi Song, Guangxin Ji, Nan Sun, Siyue Qi, Jie Li, Zhiru Xu, Huihui Zhang","doi":"10.1093/treephys/tpaf039","DOIUrl":"10.1093/treephys/tpaf039","url":null,"abstract":"<p><p>Soil salinization is increasingly recognized as a critical environmental challenge that significantly threatens plant survival and agricultural productivity. To elucidate the mechanism of salt resistance in poplar, physiological and transcriptomic analyses were conducted on 84K poplar (Populus alba × Populus glandulosa) under varying salt concentrations (0, 100, 200 and 300 mM NaCl). As salt levels increased, observable damage to poplar progressively intensified. Differentially expressed genes under salt stress were primarily enriched in photosynthesis, redox activity and glutathione metabolism pathways. Salt stress reduced chlorophyll content and net photosynthetic rate, accompanied by the downregulation of photosynthesis-related genes. NaCl (300 mM) significantly inhibited the photochemical activity of photosystems. The higher photochemical activity under 100 and 200 mM NaCl was attributed to the activated PGR5-cyclic electron flow photoprotective mechanism. However, the NAD(P)H dehydrogenase-like (NDH)-cyclic electron flow was inhibited under all salt levels. Salt stress led to reactive oxygen species accumulation, activating the ASA-GSH cycle and antioxidant enzymes to mitigate oxidative damage. Weighted gene co-expression network analysis showed that five photosynthesis-related hub genes (e.g., FNR and TPI) were down-regulated and nine antioxidant-related hub genes (e.g., GRX, GPX and GST) were up-regulated under salt stress conditions. PagGRXC9 encodes glutaredoxin and was found to be differentially expressed during the salt stress condition. Functional studies showed that overexpressing PagGRXC9 enhanced salt tolerance in yeast, and in poplar, it improved growth, FV/FM, non-photochemical quenching values and resistance to H2O2-induced oxidative stress under salt stress. This study constructed the photosynthetic and antioxidant response network for salt stress in poplar, revealing that PagGRXC9 enhances salt tolerance by reducing photoinhibition and increasing antioxidant capacity. These findings provide valuable insights for breeding salt-tolerant forest trees.</p>","PeriodicalId":23286,"journal":{"name":"Tree physiology","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143721622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How phenology interacts with frost tolerance in Southeastern Himalayan Rhododendron species.","authors":"Hongyan Jin, Xiaoqing Yin, Yue Qi, Jurriaan M de Vos, Hang Sun, Christian Körner, Yang Yang","doi":"10.1093/treephys/tpaf036","DOIUrl":"10.1093/treephys/tpaf036","url":null,"abstract":"<p><p>The frost resistance of new foliage and flowers and their relationship with the phenology of leaf-out and flowering are essential for explaining plant species distribution in seasonally cold climates. In this study, we performed a congeneric, elevational comparison of phenology with frost resistance in evergreen Rhododendron species in the Southeastern Himalayas. A comparison of the microclimate with long-term meteorological records of low temperature extremes permitted the calculation of a realistic, long-term margin of safety for 12 Rhododendron species. Surprisingly, frost resistance and phenological events were matching for leaf-out time (not flowering) in higher elevation species only. Flower-leaf sequence (FLS) and frost resistance were linked for species at higher elevation and the earliest flowering species at lower elevation only. Despite a selection of FLS by elevation, flowers (including petals, filaments and ovaries) were still prone to frost damage during the early growing season at both lower and higher elevations, while new leaves were generally safe on long-term scales, regardless of phenology and elevation. In contrast to lower montane elevation, where severe frost is rare in spring, treeline elevation species maintain safety margins over centennial time-scales by adjusting leaf-out phenology. Our data show an evolutionary priority of leaf survival over flower survival. Both, physiological acclimation and phylogenetic components contribute to these adjustments. Rare extreme frost events restrict the upper range limit of the examined Rhododendron species by affecting new foliage. It is essential to know the actual temperature extremes at organ level rather than relying on weather station records.</p>","PeriodicalId":23286,"journal":{"name":"Tree physiology","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143721602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The aridity influence on oxygen isotopes recorded in tree rings.","authors":"Kinzie Bailey, Paul Szejner, Brandon Strange, Rhiannon Nabours, Russell K Monson, Jia Hu","doi":"10.1093/treephys/tpaf044","DOIUrl":"10.1093/treephys/tpaf044","url":null,"abstract":"<p><p>The stable isotopes of oxygen in wood cellulose (δ18Ocell) have been widely used to reconstruct historical source water use in trees or changes in atmospheric humidity. However, in many cases, the δ18O of source water use is assumed to reflect that of precipitation, which is often not the case in semi-arid to arid ecosystems where trees use deeper and older water from previous precipitation events (or even groundwater). Furthermore, the degree to which δ18Ocell reflects source water and atmospheric aridity depends on pex, normally defined as the proportion of oxygen atoms that exchange between isotopically enriched carbohydrates from the leaf and unenriched xylem water during cellulose synthesis. Many studies treat pex as a constant. However, pex can only be estimated with direct measurements of δ18Ocell and the δ18O of tree source water and sucrose. Additionally, other physiological mechanisms (e.g., photosynthate translocation) can alter the isotopic signal before cellulose is produced. Thus, determining this 'apparent pex' (apex; which includes those other physiological mechanisms such as photosynthate translocation plus the exchange of oxygen atoms during cellulose synthesis), can be difficult. In this study, we collected δ18O of xylem water and δ18O of wood cellulose from seven stands of Ponderosa pine situated at the northern boundary of the North American Monsoon (NAM) climate system to assess how potential variability in apex influenced how source water and aridity were recorded in δ18Ocell. We compared measured and modeled values of δ18Ocell and found that more arid sites under-represented the vapor pressure deficit (VPD) signal in cellulose while wetter sites over-represented the VPD signal in cellulose. We also found that apex varied as a function of site aridity, where low precipitation and high VPD led to high apex, while high precipitation and low VPD led to low apex. Future studies can use our emerging understanding of the aridity-apex relationship in different portions of the annual ring to better disentangle the source water and VPD signals in cellulose, particularly for regions such as the NAM region.</p>","PeriodicalId":23286,"journal":{"name":"Tree physiology","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143796447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Leaf physiological and endophytic microbial community characteristics and interactions of different scions grafted onto Malus sieversii.","authors":"Huanhuan Zhang, Dongdong Yao, Hossam S M Ali, Guangxin Zhang, Xujiao Li, Jingshan Xi, Yingchi Liang, Li Shao, Fengyun Zhao, Songlin Yu, Kun Yu","doi":"10.1093/treephys/tpaf042","DOIUrl":"10.1093/treephys/tpaf042","url":null,"abstract":"<p><p>Endophytic microbial communities in scion leaves substantially impact the growth efficiency of apple trees (Malus × domestica Borkh.); however, the underlying mechanisms remain underexplored. Herein, we grafted three varieties-Malus sieversii, Hanfu and Fuji-onto M. sieversii (Ledeb.) M. Roem rootstocks and employed high-throughput sequencing technology to investigate how physiological traits of scion leaves influence endophytic microbiota and apple tree growth. Compared with the M. sieversii scion, the aboveground (+49.28%) and root (+62.77%) biomass of juvenile trees grafted with the Hanfu scion significantly increased, with the net photosynthetic rate and stomatal conductance rising by 20.40% and 42.26%, respectively. Additionally, the leaves of the Hanfu scion exhibited a significant increase in sucrose synthase activity and carbon accumulation (CA) compared with the M. sieversii and Fuji scions, while the carbon content and carbon-to-nitrogen ratio (C/N) significantly decreased. Furthermore, through 16S rDNA and internal transcribed spacer high-throughput sequencing, we found that the diversity and abundance of endophytic bacteria and fungi in the leaves of the Hanfu scion were higher than in the M. sieversii and Fuji scions. Hanfu scion leaves were predominantly enriched with the phyla Firmicutes and Ascomycota and the genus Salinicoccus. A close association was observed between leaf endophytic bacterial and fungal communities and physiological traits, with particularly significant correlations in the fungal communities. Parameters such as leaf intercellular carbon dioxide concentration, chlorophyll b content, C/N and CA were implicated in enriching dominant endophytic microbial phyla and genera. Through partial least squares structural equation models, we confirmed that leaf photosynthetic properties and carbon and nitrogen metabolism significantly affect leaf carbon and nitrogen accumulation through the regulation of endophytic fungal diversity, thereby affecting apple tree growth. In conclusion, the interaction between leaf physiological properties of different scion varieties and the diversity and composition of endophytic microbial communities influences apple tree growth.</p>","PeriodicalId":23286,"journal":{"name":"Tree physiology","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143796442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of SRO gene family in Nitraria sibirica Pall. and the function of NsSRO1a in improving plant drought tolerance.","authors":"Rongfeng Duan, Hongxia Zhang, Yanqiu Zhao, Huilong Zhang, Rong Li, Xihong Wan, Shuaihui Zhang, Pengyu Ying, Huaxin Zhang, Xiuyan Yang","doi":"10.1093/treephys/tpaf050","DOIUrl":"10.1093/treephys/tpaf050","url":null,"abstract":"<p><p>The SIMILAR TO RCD ONE (SRO) protein family is an important regulatory protein in plants and plays a key role in growth and development and adaptation to environmental stress. Nitraria sibirica Pall. grows in extreme environments and has significant stress resistance, so it is regarded as an ideal material for mining stress resistance genes. However, the members and functions of the SRO gene family in N. sibirica have not been studied. In this study, three SRO genes were identified in N. sibirica, named NsSRO1a, NsSRO1b and NsSRO2. Phylogenetic analysis indicated that these genes could be divided into three groups (Group I, Group II and Group III) and showed high conservation in gene structure and conserved motifs. Promoter cis-acting element analysis revealed that the promoter regions of these genes contained a variety of stress response elements. After treatment with mannitol, it was found that the expression of NsSRO1a in N. sibirica was up-regulated, suggesting that it may be a key functional gene for drought resistance. NsSRO1a was overexpressed in poplar, a woody plant model, and overexpressed plants were verified. Overexpression of NsSRO1a significantly reduced the accumulation of reactive oxygen species (ROS) and cell damage by regulating stomatal aperture and increasing chlorophyll content, proline (Pro) content, antioxidant enzyme activity and related gene expression, thus significantly improving the drought resistance of transgenic plants. These results showed that NsSRO1a enhances the drought resistance of plants by regulating ROS metabolism under drought stress, which provides an important reference for improving plant stress resistance.</p>","PeriodicalId":23286,"journal":{"name":"Tree physiology","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144015940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Suppressed water availability in winter buds delays the bud burst of broad-leaved trees in a heavy snow forest.","authors":"Shin Shoji, Kenichi Yoshimura","doi":"10.1093/treephys/tpaf048","DOIUrl":"10.1093/treephys/tpaf048","url":null,"abstract":"<p><p>Early snowmelt is known to accelerate budburst. Budburst and leaf expansion require water absorption, and current-year vessels, which function as water pathways, begin to mature in early spring. However, whether the limitation of xylem reactivation by snow affects budburst and leaf expansion remains unclear. The response of winter buds to seasonal changes in both air and soil temperatures under snow cover, as buds transition from dormancy to budburst, requires clarification. The aim of this study was to clarify how snow affects budburst and leaf expansion. We focused on whether limitations in xylem reactivation and the restrictions on water use in stems, twigs and buds due to snow affect budburst. We established two distinct sites with different snow depths in Japan. From winter to summer, we observed leaf phenology, current-year xylem reactivation and measured bud-water content in response to ambient temperatures in canopy trees of Quercus crispula and Fagus crenata. Water absorption in winter buds towards bud burst may not be suppressed by the limitation of xylem reactivation, because the maturation of current-year vessels is likely important for water use for new leaf expansion after budburst in both tree species and sites. We suggest that current-year vessels matured for water use for new leaf expansion and transpiration because vessel maturation timing was linked to the leaf growth period during early spring. From the results of water absorption rate in winter buds towards budburst, we elucidated that budburst timing was delayed because winter buds require substantial time to absorb water in a forest with a deep snow cover during spring than in a forest with less snow cover. This study concluded that soil temperature influences water absorption in winter buds towards budburst.</p>","PeriodicalId":23286,"journal":{"name":"Tree physiology","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144055282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}