Vascular Streak Dieback (Ceratobasidium theobromae): History and Biology

McMahon, Peter; Purwantara, Agus

doi:10.1007/978-3-319-24789-2_9

Cited by 22 publications

(20 citation statements)

References 35 publications

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“…On the other hand, we found an OTU closest related to the genus Ceratobasidium as increased in lower ADG group. This genus comprises a set of cosmopolitan fungi, most of them saprophytes in the soil [60]. Some strains of this genus, however, have been successfully tested as a tool for biocontrol of the plant pathogen Rhizoctonia solani [61].…”

Section: Discussionmentioning

confidence: 99%

Microbial Patterns in Rumen Are Associated with Gain of Weight in Beef Cattle

Freitas

David

Takagaki

et al. 2020

Preprint

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Ruminal microorganisms play a pivotal role in cattle nutrition. The discovery of the main microbes responsible for enhancing the gain of weight in beef cattle might be used in therapeutic approaches to increase animal performance and cause less environmental damages. Here, we examined differences in bacterial and fungal composition of rumen samples of Braford heifers raised in a natural grassland from Pampa Biome in Brazil. We aimed to detect microbial patterns in the rumen that could be correlated with the gain of weight. 16S and ITS1 genes were amplified from ruminal samples and sequenced to identify the closest microbial relatives within the microbial communities. A predictive model based on microbes responsible for the gain of weight was build and further tested using the entire dataset. The model detected a set of microorganisms associated with animals in the high gain of weight group, including the bacterial taxa RFN20, Prevotella, Anaeroplasma and RF16 and the fungal taxa Aureobasidium, Cryptococcus, Sarocladium, Pleosporales and Tremellales. Most of these organisms have been correlated to the production of substances that improve the ruminal digestion process. These findings provide new insights about cattle nutrition and suggest the use of these microbes to improve beef cattle breeding.

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Section: Discussionmentioning

confidence: 99%

Microbial Patterns in Rumen Are Associated with Gain of Weight in Beef Cattle

Freitas

David

Takagaki

et al. 2020

Preprint

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“…Berbeda dengan hasil penelitian Guest & Keane (2007), pada penelitian ini yang banyak ditemukan adalah daun bergejala nekrotik (Gambar 1C). Hal ini serupa dengan yang dilaporkan (McMahon & Purwantara, 2016) bahwa gejala yang banyak ditemukan saat ini di sentra produksi kakao adalah daun mengalami bercak nekrotik pada ujung dan pinggir daun yang terinfeksi. Hal ini mungkin disebabkan oleh perubahan ras/strain patogen atau ketahanan tanaman terhadap infeksi C. theobromae semakin menurun.…”

Section: Gejala Serangan Vsdunclassified

“…Penyakit VSD merupakan penyakit pembuluh yang menyerang pembuluh xilem dan menyebabkan metabolisme tanaman terganggu. Jika translokasi hara dan air melalui jaringan pembuluh terganggu maka akan berpengaruh terhadap proses fisiologis, yaitu terhambatnya penyaluran air dan zat hara dari bagian bawah ke bagian atas tanaman (McMahon & Purwantara, 2016). Hal ini mengakibatkan pertumbuhan tanaman akan terganggu sehingga produksi kakao juga akan berkurang seperti pada kontrol.…”

Section: Pengaruh Metabolit Sekunder Dan Fungisida Nabati Terhadap Prunclassified

Pengaruh Metabolit Sekunder Trichoderma spp. dan Fungisida Nabati untuk Mengendalikan Penyakit VSD pada Tanaman Kakao

Harni

Amaria

Mahsunah

et al. 2019

J. tanam. industri dan penyegar

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Vascular streak dieback (VSD) caused by Ceratobasidium theobromae is a major disease in cacao which results in yield losses up to 45%. Controlling VSD using secondary metabolites and botanical fungicide is expected to reduce disease attacks because secondary metabolites contain antibiotics, enzymes, and toxins that can control the disease and botanical fungicide that are antifungal. The research aimed to determine the effect of Trichoderma spp. secondary metabolites and botanical fungicide to control VSD in cacao. The research was conducted in the Integrated Laboratory, IIBCRI, Sukabumi, Biotechnology Laboratory, BPPT, Serpong and farmer gardens in Rahmat Village, Palolo District, Sigi Regency, Central Sulawesi, from March to December 2017. The research used a randomized block design of 7 treatments with 3 replications; each replication consists of 10 plants. The treatments were: (1) Trichoderma virens LP1, (2) T. amazonicum LP3, (3) botanical fungicide, (4) T. virens LP1 + botanical fungicide, (5) T. amazonicum LP3 + botanical fungicide, (6) chemical fungicide (for comparison), (7) control (without application). Variables observed were the symptoms of the attack, severity and disease progression, and production. The results showed that Trichoderma spp. secondary metabolites suppress VSD disease severity and increase cacao production up to 33.97%–61.34%, either in a single form or in combination with botanical fungicide. T. virens LP1 secondary metabolite showed the highest suppression of VSD disease (54.18%), followed by the combination of T. virens LP1 + botanical fungicide (47.64%), better than chemical fungicide (30.89%). Thus, Trichoderma spp. secondary metabolites can be used as a VSD control technology.

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“…Moreover, Trisno, Refflin, & Martinius (2016) stated that the hyphae of the pathogen is characterized with perpendicular branch and dolipore septate. The pathogen is wind-borne disease and xyleminfecting fungus which has been discovered mostly associated only with cocoa and may be related to other endemic plant species and has it transferred to cocoa (McMahon & Purwantara, 2016).…”

Section: Pathogen Infection and The Symptom Of Vsdmentioning

confidence: 99%