Article
Agronomy
Takashi Hanagasaki, Maki Yamashiro, Kozo Gima, Tetsuya Takushi, Shinji Kawano
Summary: The isolated strains causing papaya black rot in this study showed distinct characteristics different from other Erwinia species, suggesting they may belong to a novel species. 16S rDNA sequence similarity searches and phylogenetic analysis confirmed that these strains are likely a new species within the genus Erwinia. Therefore, it is proposed to add these Erwinia strains to the list of papaya black rot pathogens.
Article
Food Science & Technology
T. Hanagasaki, T. Takushi, A. Ajitomi, H. Yamagishi, S. Kawano
Summary: Papaya bacterial disease, caused by Erwinia sp., has become an epidemic in Okinawa Prefecture, Japan. Oxytetracycline and streptomycin showed strong inhibitory effects against the pathogen in minimum inhibitory concentration assay. Captan, mancozeb, copper (II) hydroxide, and oxytetracycline exhibited preventive effects on black rot on potted papaya plantlets, with captan being the most effective.
Article
Agronomy
Mark Paul Selda Rivarez, Elizabeth P. Parac, Shajara Fatima M. Dimasingkil, Pablito M. Magdalita
Summary: The study demonstrates the antibacterial and growth promoting activities of metabolites from native endophytic bacteria, which reduce the incidence of papaya diseases. It suggests that native endophytic bacteria may enhance plant fitness and disease resistance through pathogen antagonism and plant growth promotion.
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2021)
Review
Genetics & Heredity
Ziwei Zhou, Rebecca Ford, Ido Bar, Chutchamas Kanchana-udomkan
Summary: The papaya industry faces challenges in fruit quality consistency and flavor, necessitating a better understanding of genetic and biochemical mechanisms for breeding new varieties with improved taste. Research methods such as studying sugar components, volatile compounds, and genomics are used to identify the flavor profile of papaya.
Review
Food Science & Technology
Rebecca A. Haber, Reicelle D. Garcia, Jamie N. Hernandez, Sarah Jamieson, Arijit Mondal, Anupam Bishayee
Summary: This paper provides a comprehensive analysis of the cancer-preventive potential of Carica papaya extracts, fractions, and isolated phytochemicals. It discusses the cellular and molecular mechanisms of action, bioavailability, pharmacokinetics, and safety profiles of these phytochemicals, as well as the limitations, challenges, and future directions of research.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2022)
Article
Agronomy
Muniroh Md Saad, Rabiatul-Adawiah Zainal-Abidin, Mohd Azhar Hassan, Norliza Abu Bakar
Summary: This study used dual RNA-seq analysis to investigate the resistance and pathogenesis mechanisms of papaya against papaya dieback disease. The findings revealed that genes highly expressed in resistant varieties were associated with late infection, suggesting their involvement in defense mechanisms against the pathogen. In addition, KEGG pathway enrichment analysis identified pathways correlated with defense strategies.
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Fu-Run Wang, Li Yang, Fan-Dong Kong, Qing-Yun Ma, Qing-Yi Xie, You-Gen Wu, Hao-Fu Dai, Ping Chen, Na Xiao, You-Xing Zhao
Summary: Three new humulane-type sesquiterpenoids and three known compounds were isolated from an endophytic fungus derived from Carica papaya leaves. The compounds showed significant inhibition of hepatic glucose production induced by glucagon, with mechanisms involving cAMP accumulation suppression. Determination of their structures and absolute configurations were accomplished through NMR and HRESIMS analysis.
FRONTIERS IN CHEMISTRY
(2021)
Article
Horticulture
Carlos Lopez Encina, Manuel Lopez Granero, Jose Javier Regalado
Summary: In this article, the authors present a reliable method for the long-term micropropagation of papaya, using microshoots developed from the axillary buds of papaya shoots as primary explants. The proliferation medium (PPRM) was found to maintain papaya shoots under continuous proliferation for 20 years, while the elongation medium (PELM) and rooting medium (PROM) were designed to recover shoots with poor growth and induce high-quality roots from nonrooted shoots, respectively. The main objective of this work was to provide a micropropagation method that can maintain healthy elite genotypes of papaya for long periods of time and produce a high number of good quality plants.
Article
Agronomy
Juan Alberto Cabrera, Axel Ritter, Vanesa Raya, Eudaldo Perez, Maria Gloria Lobo
Summary: To optimize papaya yield and quality, crop phenology studies are necessary, involving measurement of meteorological variables and morphological characteristics, as well as calculation of source-sink ratios and study of fruit quality. Results indicated that better environmental control inside greenhouses and screenhouses is needed to maintain good fruit quality.
Article
Agronomy
Adriana Azevedo Vimercati Pirovani, Helaine Christine Cancela Ramos, Renato Santa-Catarina, Tathianne Pastana de Sousa Poltronieri, Julio Cesar Fiorio Vettorazzi, Pedro Henrique Araujo Diniz Santos, Josefa Grasiela Silva Santana, Rafaela Pereira Duarte, Marcelo Vivas, Messias Gonzaga Pereira
Summary: The study focused on evaluating morpho-agronomic attributes and resistance to black spot and phoma spot in a new hermaphrodite papaya genotype (H-M3), which showed promising potential as a breeding material due to its close proximity to 'Calimosa' and Maradol genotypes, known for their resistance traits.
Review
Pharmacology & Pharmacy
Md Moklesur Rahman Sarker, Farzana Khan, Isa Naina Mohamed
Summary: Dengue fever, caused by the Aedes aegypti virus, has seen a drastic increase in prevalence and mortality rates in recent years in countries like Bangladesh, Philippines, Thailand, Brazil, and India. While traditional medicine using papaya leaves has shown some effectiveness in treating the disease, physicians in Bangladesh do not recommend its use.
FRONTIERS IN PHARMACOLOGY
(2021)
Review
Nutrition & Dietetics
Bee Ping Teh, Norzahirah Binti Ahmad, Saharuddin Bin Mohamad, Terence Yew Chin Tan, Mohd Ridzuan Bin Mohd Abd Razak, Adlin Binti Afzan, Ami Fazlin Binti Syed Mohamed
Summary: This scoping review critically appraised the scientific evidence related to the efficacy of Carica papaya leaf juice in relieving dengue related manifestations. The review revealed that besides its larvicidal activity, Carica papaya leaf juice also exhibited anti-thrombocytopenic and immunomodulatory effects on dengue infection. This study suggests that Carica papaya leaf juice has the potential to be a new safe and effective drug against dengue disease.
Article
Multidisciplinary Sciences
Juan Liu, Jennifer Han, Anupma Sharma, Ching Man Wai, Ray Ming, Qingyi Yu
Summary: The study found that dosage compensation in papaya is regulated on a gene-by-gene level rather than whole sex-linked region, with seven genes on the papaya X chromosome showing dosage compensation. Expression ratios in different evolutionary strata suggest different mechanisms of gene regulation and maintenance of transcriptional balance between females and males.
SCIENTIFIC REPORTS
(2021)
Article
Biotechnology & Applied Microbiology
Pallavi S. Patil, Umesh B. Deshannavar, M. Ramasamy, Sampath Emani
Summary: The study investigated the use of sugarcane juice blended with different fruit juices as substrate for wine production, identifying a promising blend of sugarcane-papaya juice based on total alcohol content and overall acceptability. Optimum fermentation conditions were determined for the sugarcane-papaya wine, resulting in high overall acceptability and physicochemical parameters within standard range. GC-HRMS analysis identified 12 volatile compounds in the wine, while inductively coupled plasma atomic emission spectroscopy revealed the presence of minerals such as Ca, Cu, K, Mg, Mn, Na, Zn, and P.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Plant Sciences
Sumit K. Soni, Manoj Kumar Mishra, Maneesh Mishra, Swati Kumari, Sangeeta Saxena, Virendra Shukla, Sudeep Tiwari, Pramod Shirke
Summary: The present investigation revealed that the infection of papaya leaves by PaLCuV resulted in significant changes in the anatomy, physiology, and pharmacological properties of the leaves. The infected leaves showed reduced stomatal density, photosynthesis rate, and enzymatic activity, while the size of guard cells, transpiration rate, and anthocyanin content increased. Moreover, the pharmacological potential of the infected leaves was significantly decreased.
Article
Plant Sciences
Atsushi Ajitomi, Ayaka Minoshima, Tetsuya Takushi, Hanh H. Truong, Atsushi Ooshiro, Maki Yamashiro, Chiemi Arasaki, Yuuri Hirooka
JOURNAL OF GENERAL PLANT PATHOLOGY
(2020)
Article
Plant Sciences
Atsushi Ajitomi, Tetsuya Takushi, Yukio Sato, Chiemi Arasaki, Atsushi Ooshiro
JOURNAL OF GENERAL PLANT PATHOLOGY
(2020)
Article
Agriculture, Dairy & Animal Science
Takashi Hanagasaki
TROPICAL GRASSLANDS-FORRAJES TROPICALES
(2020)
Article
Agronomy
Takashi Hanagasaki, Maki Yamashiro, Kozo Gima, Tetsuya Takushi, Shinji Kawano
Summary: The isolated strains causing papaya black rot in this study showed distinct characteristics different from other Erwinia species, suggesting they may belong to a novel species. 16S rDNA sequence similarity searches and phylogenetic analysis confirmed that these strains are likely a new species within the genus Erwinia. Therefore, it is proposed to add these Erwinia strains to the list of papaya black rot pathogens.
Article
Agriculture, Dairy & Animal Science
Takashi Hanagasaki
Summary: The study found that propagating the Brazilian grass cultivar MG5 Vitória in Okinawa can be successfully done vegetatively through cutting stems and planting them in a suitable mixture of soil and compost. However, finding a high-quality seed source without phytosanitary problems may be a better solution for increasing the area planted with MG5 in Okinawa.
TROPICAL GRASSLANDS-FORRAJES TROPICALES
(2021)
Article
Food Science & Technology
Takashi Hanagasaki
Summary: The study found that Ogimi Kugani and Nakamoto Seedless can be used to produce vinegar extracts, although bitterness may vary depending on the time of harvest. Additionally, vinegar extracts from both shikuwasa varieties contain similar bioactive compounds and flavor profiles.
FOODS AND RAW MATERIALS
(2021)
Article
Food Science & Technology
T. Hanagasaki
Summary: A process for extracting vinegar from acerola puree waste has been developed, yielding a vinegar extract with nutritional benefits that can be used in seasonings and food products.
Article
Plant Sciences
Atsushi Ajitomi, Maki Yamashiro, Tetsuya Takushi, Atsushi Ooshiro
Summary: This article reports the first occurrence of Botrytis cinerea causing grey mould disease on floral tissue of mango in Japan. The symptoms, isolation and identification methods of the fungus are described in detail.
AUSTRALASIAN PLANT DISEASE NOTES
(2022)
Article
Agriculture, Dairy & Animal Science
Takashi Hanagasaki
Summary: Two studies conducted on Urochloa decumbens cultivar 'Basilisk' in Okinawa showed that it had higher dry matter yield, digestibility, and total digestible dry matter yield compared to other grass species.
TROPICAL GRASSLANDS-FORRAJES TROPICALES
(2022)
Article
Plant Sciences
Akira Ashida, Tetsuya Takushi, Maurizio Camagna, Ikuo Sato, Sotaro Chiba, Daigo Takemoto
Summary: Tetrapanax papyrifer, a woody plant native to Taiwan and western Japan, is found to be infected by Neofusicoccum parvum, a pathogen causing stem rot in grapes and mangoes. Furthermore, this pathogen also exhibits pathogenicity on various common weeds, which may contribute to its prevalence in commercially grown mango and grape crops.
JOURNAL OF GENERAL PLANT PATHOLOGY
(2023)
Article
Food Science & Technology
T. Hanagasaki, T. Takushi, A. Ajitomi, H. Yamagishi, S. Kawano
Summary: Papaya bacterial disease, caused by Erwinia sp., has become an epidemic in Okinawa Prefecture, Japan. Oxytetracycline and streptomycin showed strong inhibitory effects against the pathogen in minimum inhibitory concentration assay. Captan, mancozeb, copper (II) hydroxide, and oxytetracycline exhibited preventive effects on black rot on potted papaya plantlets, with captan being the most effective.
