Journal of Citrus Pathology最新文献_第3页

Changes in host microRNA expression during citrus tristeza virus induced disease 柑桔tristeza病毒致病过程中宿主microRNA表达的变化

Journal of Citrus Pathology Pub Date : 1900-01-01 DOI: 10.5070/c461041164

S. Harper, S. Cowell, W. Dawson

引用次数: 3

Early root infection and damage in Huanglongbing disease development 黄龙冰病发病早期根系侵染与损害

Journal of Citrus Pathology Pub Date : 1900-01-01 DOI: 10.5070/C411025181

E. Johnson, J. Wu, D. Bright, J. Graham

{"title":"Early root infection and damage in Huanglongbing disease development","authors":"E. Johnson, J. Wu, D. Bright, J. Graham","doi":"10.5070/C411025181","DOIUrl":"https://doi.org/10.5070/C411025181","url":null,"abstract":"Author(s): Johnson, E. G.; Wu, J.; Bright, D. B.; Graham, J. H. | Abstract: Huanglongbing in grove trees is initially identified by foliar symptoms, most commonly blotchy mottle. Detection of Candidatus Liberibacter asiaticus (Las) in leaf tissue by qPCR early in disease development is usually limited to symptomatic leaves and proximal young leaves. Over multiple years, disease symptoms spread to the rest of the canopy. Although Las has been detected in root tissue, the decline of roots has been assumed to happen later in disease development when photosynthate production and transport have been significantly diminished in the tree canopy. Observations of initial spread of Las from the bud-inoculation site in the trunk of 1-yr-old potted trees have revealed that Las is frequently detectable in roots months before detection of Las in leaves and foliar symptom development. Even after symptom development Las is more evenly distributed in root tissue than in the canopy. Preliminary evidence suggests that Las is also more evenly distributed in roots of grove trees. Asymptomatic 9 year old grove trees with root Las infection had 26-41% lower root density than asymptomatic trees without detectable root Las. The loss of root density was independent of Las detection in leaves. Root loss precedes carbohydrate starvation as evidenced by root starch concentrations, suggesting the bacteria may play a more active role in root loss than phloem plugging. These results suggest that early invasion of roots by Las leads to root decline before the appearance of foliar symptoms and is likely the cause of larger than expected yield reduction on trees with limited foliar symptoms.","PeriodicalId":166019,"journal":{"name":"Journal of Citrus Pathology","volume":"48 24","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120815431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

From spinach chloroplasts to endogenous bacteria causing diseases in citrus: an autobiography of Joseph Marie Bové 从菠菜叶绿体到引起柑橘疾病的内源性细菌:约瑟夫·玛丽·博弗莱自传

Journal of Citrus Pathology Pub Date : 1900-01-01 DOI: 10.5070/c461045133

J. Bové

引用次数: 0

Variability of direction of tree-to-tree spread of HLB over time HLB树间传播方向随时间的变异性

Journal of Citrus Pathology Pub Date : 1900-01-01 DOI: 10.5070/C411024825

A. Kriss, S. Lopes, T. Gottwald

引用次数: 0

Risk-based residential HLB/ACP survey for California, Texas and Arizona 加州、德克萨斯州和亚利桑那州基于风险的住宅HLB/ACP调查

Journal of Citrus Pathology Pub Date : 1900-01-01 DOI: 10.1094/grow-cit-10-13-001

T. Gottwald, W. Luo, N. McRoberts

引用次数: 12

Citrus Rootstocks: Their characters and reactions (an unpublished manuscript) 柑橘砧木:它们的特性和反应(一份未发表的手稿)

Journal of Citrus Pathology Pub Date : 1900-01-01 DOI: 10.5070/C481052938

W. Bitters

引用次数: 6

In-Field Thermal Treatment of Huanglongbing (HLB) infected Trees 黄龙冰(HLB)侵染树木的田间热处理

Journal of Citrus Pathology Pub Date : 1900-01-01 DOI: 10.5070/C411025141

L. Khot, S. E. Jones, P. Trivedi, M. Ehsani, N. Wang, J. Reyes-De-Corcuera

{"title":"In-Field Thermal Treatment of Huanglongbing (HLB) infected Trees","authors":"L. Khot, S. E. Jones, P. Trivedi, M. Ehsani, N. Wang, J. Reyes-De-Corcuera","doi":"10.5070/C411025141","DOIUrl":"https://doi.org/10.5070/C411025141","url":null,"abstract":"Author(s): Khot, L. R.; Jones, S. E.; Trivedi, P.; Ehsani, M. R.; Wang, N.; Reyes-De-Corcuera, J. I. | Abstract: To decrease Candidatus Liberibacter asiaticus titer and increase the productive life of infected trees, thermal treatment of orange trees was proposed. A moving greenhouse was developed to cover single trees during the summer of 2012. Four trees (~ 2.5×2.5×2.5 m) were treated, one tree per day, during the months of September (trees T1 through T3) and October (tree T4). From each tree, three symptomatic branches were sampled to determine microbial kill before (0 h) and at 2, 3, 4, and 5 h during the treatment. Temperature distribution throughout the canopy and on the sampled branches was also recorded. Maximal temperatures in the ranges 50 to 53 °C were reached at the top (2.4 m) of the canopy whereas at the bottom of the canopy (i.e., 0.6 m) maximal temperatures ranged from 36 to 43 °C. Due to varied micro-meteorological conditions during the treatment, temperatures of the T1 through T4 sampled branches reached above 40⁰C for 217, 166, 35, 228 min, respectively. For T1, T2 and T4 trees, average temperatures of the sampled branches reached above 45 °C for 87, 35, and 49 min or more. Attempts to quantitatively determine microbial kill by determining percent live bacteria at selected time intervals during thermal treatment was unreliable due to the very uneven distribution of initial proportion of live-to-dead bacteria and analysis variability. However, overall, after thermal treatments, live microbial populations decreased. These findings indicate that adequate thermal treatment of trees required forced convection air flow and supplemental heating.","PeriodicalId":166019,"journal":{"name":"Journal of Citrus Pathology","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127474940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A survey of Florida citrus viruses and viroids 佛罗里达柑橘病毒和类病毒的调查

Journal of Citrus Pathology Pub Date : 1900-01-01 DOI: 10.5070/C451040701

S. Cowell, S. Harper, W. Dawson

引用次数: 1

Evaluating high-resolution computed tomography to study citrus tristeza virus-induced stem pitting 评价高分辨率计算机断层扫描研究柑橘tristeza病毒诱导的茎蚀

Journal of Citrus Pathology Pub Date : 1900-01-01 DOI: 10.5070/C481050093

D. Aldrich, R. Bester, G. Cook, A. Plessis, J. Burger, H. J. Maree

引用次数: 0

Biography of Stephen M Garnsey 史蒂芬·M·加恩西传记

Journal of Citrus Pathology Pub Date : 1900-01-01 DOI: 10.5070/c461045649

W. Dawson

引用次数: 0