An illustrated key to neotropical termite genera insecta. Water transmits fungal spores from deadwood to the surfaces of immature fruit where the fungus colonizes the dead tissue of the button. Lasiodiplodia theobromae, moniliophthora roreri y phytophthora spp. The conidia of botryodiplodia theobromae are initially hyaline and nonseptate and may be released from pycnidia in this condition. Physiological studies on lasiodiplodia theobromae and. Mar 16, 2020 synonym of lasiodiplodia theobromae pat. It causes rotting and dieback in most species it infects. Lasiodiplodia theobromae is a facultative parasite that completes its life cycle on dead twigs in groves by growing and sporulating in the deadwood of citrus trees.
Lasiodiplodia theobromae causes vascular streak dieback vsd. Lasiodiplodia theobromae causes vascular streak dieback vsdlike. In hawaii, the only other known host of this fungus is cacao theobroma cacao. Lasiodiplodia theobromae causes a damaging diebackof cocoa. The role of the fungus as a primary pathogen causing dieback of cacao is questionable turner, 1967 but its rotting ability is an admitted serious hazard during storage of fruits and yams. Linolenate 9r dioxygenase and allene oxide synthase activities of lasiodiplodia theobromae. Conidias inmaduras hialinas y unicelulares y maduras oscuras y bicelulares 106 figura 52. Botryodiplodia theobromae grew and sporulated best at 28c on media amended with ripe mangoextract and dextrose or sucrose. Evaluation of bioagents to control lasiodiplodia theobromae pat. Control swabs with sterile water did not produce symptoms. It was microscopically identified on the basis of cultural and morphological characters. Materials and methods lasiodiplodia theobromae was isolated from inflorescences of cashew showing typical symptoms of inflorescence blight disease in ibadan, nigeria. Keratomycose et endophtalmie detiologie exceptionnelle. This disease has been reported in hawaii and india only, but unidentified botryodiplodia spp.
As disease agent, pathogen is encountered in its anamorph state, named as lasiodiplodia. Botryodiplodia theobromae is a cosmopolitan and diverse species. Mckenzie 1989 describes the fungus as predominantly a virulent wound pathogen associated with blights, dieback, root and collar rots, dampingoff, and with preharvest and storage rots of fruit, yam, taro, etc. Lasiodiplodia theobromae is a plant pathogen with a very wide host range. Three strains of lasiodiplodia theobromae were the most promising. As such rots are caused by complexes of pathogens, the economic impact is hard to quantify. It also infects biancaea sappan, a species of flowering tree also known as sappanwood. Evaluation of jasmonic acid production by lasiodiplodia theobromae under submerged fermentation kavitha mary jackson, marimuthu ponnusamy and sivakumar uthandi department of agricultural microbiology, tamil nadu agricultural university, coimbatore 641 003, tamil nadu, india corresponding author a b s t r a c t coconut and coco medium. This fungus attacks more than 280 species of plants in different parts of the world domsch et al. Some other isolates of the first six mentioned taxa behave as nonpathogenic. Evaluation of jasmonic acid production by lasiodiplodia. Lasiodiplodia theobromae in citrus fruit diplodia stemend. Lasiodiplodia theobromae in citrus fruit diplodia stem. Dieback due to lasiodiplodia theobromae, a new constraint to cocoa production in cameroon.
On the basis of morphological and cultural characters as well as phylogenetic analysis of the internal transcribed spacer region its, and part of the translation elongation factor 1. Lasiodiplodia theobromae productos biologicos farmagro. Physiological studies on lasiodiplodia theobromae and fusarium solani 37 statistically different at continuous light and continuous darkness. Pdf dieback due to lasiodiplodia theobromae, a new. Muerte regresiva del mango por lasiodiplodia theobromae. Pages in category cacao diseases the following 20 pages are in this category, out of 20 total. Lasiodiplodia theobromae causes vascular streak dieback. Lasiodiplodia theobromaevsdlike symptomscacaopathogenicity recently, cacao theobroma cacao growing in the philippines is making a comeback because of the increasing local and global demand for dried fermented cacao beans. Oct 12, 2019 neotermes injurious to living guava tree, with notes on other amazonian termites.
Resistance was assessed as the size of necrotic lesions, distance of fungal colonisation in the stem. Identification and pathogenicity of lasiodiplodia theobromae. The cushion gall disease complex corresponds to abnormalities that occur on the trunk and branch. Towards rational cocoa production and efficient use for a sustainable word coca economy. However, wadud and ahmed 1962 have reported that l. This is, however, the first report of a damaging dieback and. These strains inhibited the growth of mr and mp, both in the confrontation of. Twentynine and 15 cacao genotypes were screened in the laboratory and the greenhouse, respectively, for resistance to isolates of fusarium decemcellulare and lasiodiplodia theobromae at imperial college londons biological sciences campus, uk. Cooccurrence of pathogenic and nonpathogenic fusarium. First report of branch dieback of cashew caused by lasiodiplodia theobromae in brazil.