Article
Microbiology
Irene Lavagi-Craddock, Tyler Dang, Stacey Comstock, Fatima Osman, Sohrab Bodaghi, Georgios Vidalakis
Summary: Dwarfed citrus trees are crucial for the future sustainability of citrus production. Transcriptome analysis of CDVd-infected stems and roots revealed differentially expressed genes associated with the dwarfing phenotype. Furthermore, most transcriptome reprogramming occurred in the scion rather than in the rootstock.
Article
Horticulture
Camilla de Andrade Pacheco, Alecio Souza Moreira, Eduardo Augusto Girardi, Renato Beozzo Bassanezi, Eduardo Sanches Stuchi
Summary: The study evaluated the growth and fruit production of four commercial sweet orange varieties under two nursery tree standards, showing that large headed trees could increase production but with a relatively high incidence of huanglongbing. Strict control of the vector is crucial to reduce disease impact.
SCIENTIA HORTICULTURAE
(2021)
Article
Energy & Fuels
Bryan R. Moser, Christina Dorado, Grigor B. Bantchev, Jill K. Winkler-Moser, Kenneth M. Doll
Summary: The citrus industry produces a significant amount of biomass waste during juice production. Oil extracted from inedible sweet orange seeds was explored as a feedstock for biodiesel production. The resulting methyl esters met most of the biodiesel standards, except for oxidative stability.
Article
Horticulture
Ariel Singerman, Stephen H. Futch, Brandon Page
Summary: Citrus greening has significantly reduced sweet orange yield in Florida, impacting the profitability and sustainability of citrus production. Improved rootstocks can increase citrus tolerance to the disease and help growers cope better with its effects. The study's findings can aid growers in making informed decisions on rootstock selection for new groves.
Article
Food Science & Technology
Gloria Itzel Pena-Vazquez, Maria Teresa Dominguez-Fernandez, Bianka Dianey Camacho-Zamora, Marcelo Hernandez-Salazar, Vania Urias-Orona, Maria-Paz De Pena, Ana Laura de la Garza
Summary: This study simulated the bioaccessibility of polyphenols in sweet orange during the digestion process and found that the bioaccessibility of polyphenols decreased in the intestinal phase. Flavanones were found to be the most abundant subgroup of polyphenols in sweet orange.
JOURNAL OF FUNCTIONAL FOODS
(2022)
Article
Agronomy
Renato Beozzo Bassanezi, Isabela Primiano, Dirceu Mattos, Jose Antonio Quaggio, Rodrigo Marcelli Boaretto, Antonio Juliano Ayres, Joseph Marie Bov
Summary: A long-term trial was conducted to investigate the effects of adding calcium and magnesium on the incidence and severity of HLB in sweet orange trees. The results showed that the additional supply of calcium and magnesium did not significantly reduce the occurrence or severity of HLB, and the yield of symptomatic trees remained lower compared to asymptomatic trees.
Article
Polymer Science
Mario J. Rosado, Jorge Rencoret, Ana Gutierrez, Jose C. del Rio
Summary: The lignin structure of orange tree pruning (OTP) residue was examined. The OTP-MWL mainly consisted of guaiacyl (G) units with minor amounts of syringyl (S) and p-hydroxyphenyl (H) units. The lignin contained various linkages, including beta-O-4 ' alkyl-aryl ethers, phenylcoumarans, resinols, dibenzodioxocins, and spirodienones. The presence of condensed linkages makes the lignocellulosic residue more recalcitrant to delignification.
Article
Agronomy
Leigh Archer, Jawwad Qureshi, Ute Albrecht
Summary: Trunk injection is an effective method for managing huanglongbing (HLB) in citrus, with different compounds showing varying efficacy. Imidacloprid injection reduces psyllid populations, but its effectiveness diminishes over time. Oxytetracycline injection improves tree health, reduces bacterial titers, and decreases fruit drop, leading to increased yield.
Article
Plant Sciences
Alissar Cheaib, Lamiaa M. Mahmoud, Christopher Vincent, Nabil Killiny, Manjul Dutt
Summary: This study investigates the impact of introducing Vitis vinifera mybA1 (VvmybA1) in 'Hamlin' sweet orange trees. Results show that the transgenic plants display intense purple color due to the accumulation of anthocyanins in leaf epidermal cells. Although there is a slight reduction in photosynthetic performance, other parameters remain unaffected.
Article
Agronomy
Pattarapol Khamsaw, Chompunut Lumsangkul, Anuruddha Karunarathna, Nuttacha Eva Onsa, Sawaeng Kawichai, Bajaree Chuttong, Sarana Rose Sommano
Summary: This study assessed the quality of tangerine fruit peel oil and its effectiveness in preventing postharvest diseases caused by Penicillium digitatum and Colletotrichum gloeosporioides.
Article
Agronomy
Franklin Jackson Machado, Fabricio Eustaquio Lanza, Marcela Olivetti Ferretti, Regis Oliveira Fialho, Franklin Behlau, Geraldo Jose Silva-Junior
Summary: This study investigated the impact of citrus black spot (CBS) on yield loss in sweet orange orchards, revealing a consistent relationship between CBS severity and premature fruit drop, which can be used as a reference for orchard management.
Article
Plant Sciences
Qin Li, Junfei Yao, Wei Zheng, Jialu Wang, Ling Liao, Guochao Sun, Xun Wang, Honghong Deng, Mingfei Zhang, Zhihui Wang, Bo Xiong
Summary: The study explored the effects of different rootstock grafting and developmental stages on flavonoid compounds in citrus peels. It was found that hetero-grafting on Poncirus trifoliate population resulted in a higher concentration of total flavonoid content compared to grafting on C. junos Siebold ex Tanaka. Metabolomic analysis identified 703 flavonoid compounds, with most of them being flavones. Transcriptomic analysis revealed thousands of differentially expressed genes and identified hub structure genes and transcription factors that influenced flavonoid biosynthesis. The findings indicated that hetero-grafting could enhance the accumulation of flavonoid compounds in citrus peels during development stages.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Na Song, Yulin Cheng, Weiye Peng, ErPing Peng, Zengling Zhao, Tiantian Liu, Tuyong Yi, Liangying Dai, Bing Wang, Yanyun Hong
Summary: In this study, 15 SBP-BOX genes were identified in sweet orange, classified into four subfamilies, mainly driven by segmental duplication events, and undergoing purifying selection. It was found that CsSBP genes are expressed in different tissues and developmental stages, playing important roles in response to abiotic stress. All CsSBP genes were downregulated upon infection by the fungal pathogen Diaporthe citri, providing valuable information for exploring the role of SBP-box in sweet orange.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Genetics & Heredity
Quan Wan, Tingting Bai, Minmin Liu, Ying Liu, Yating Xie, Tao Zhang, Min Huang, Jinlian Zhang
Summary: In this study, 30 CHI genes were identified for the first time in six Citrus species, and their expression levels were analyzed. The results showed that CHI genes in Citrus sinensis were highly expressed after the second physiological fruit-falling period. Furthermore, the expression of certain CHI genes in the peel was higher than that in the pulp, and some genes maintained a high expression level in different stages and tissues.
FRONTIERS IN GENETICS
(2022)
Article
Plant Sciences
Deived Uilian de Carvalho, Carmen Silvia Vieira Janeiro Neves, Maria Aparecida da Cruz, Talita Vigo Longhi, Franklin Behlau, Sergio Alves de Carvalho, Rui Pereira Leite Junior
Summary: This study aimed to evaluate the horticultural traits of 19 late-season sweet orange selections under citrus canker and huanglongbing (HLB) endemic conditions. The results showed that Natal IAC, Folha Murcha IAC, IPR Folha Murcha, Natal Murcha, Campbell 479 Valencia and Valencia Late Fla. had the best horticultural performance and low HLB incidence. These late-season sweet oranges are the most advantageous selections for citrus orchard diversification under citrus canker and HLB endemic conditions in humid subtropical regions.
FRONTIERS IN PLANT SCIENCE
(2022)