Managing Banana Bunchy Top Virus in Smallholdings in the Philippines

Molina, Alian; Sinohin, V.G.O.; Cueva, Fe M. Dela; Esguerra, Angelina V.; Crucido, S. S.; Vida, Eloni; Temanel, B. E.; Anit, E.A.; Eusebio, J. E.

doi:10.17660/actahortic.2009.828.39

Cited by 10 publications

(10 citation statements)

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“…Banana bunchy top disease has been an important disease of the banana crop in the Philippines (Molina et al, 2009). Molecular information regarding the Philippine BBTV isolates has been lacking and remains unexplored.…”

Section: Discussionmentioning

confidence: 99%

“…In the 1990s, smallholder production of the popular dessert cv. Lakatan in the northern Philippines was virtually eliminated by severe BBTD infection (Molina et al, 2009). Initial symptoms of the disease involve the appearance of dark green streaks in the veins which becomes apparent with a combination of marginal chlorosis or yellowing of the leaves.…”

Section: Introductionmentioning

confidence: 99%

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Genetic Structure and Diversity of Banana Bunchy Top Virus (BBTV) in the Philippines

Cortaga

et al. 2021

Preprint

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Banana bunchy top virus (BBTV) is an important disease of banana in the Philippines and in other banana-producing countries. This study was conducted to investigate the genetic structure and diversity of Philippine BBTV isolates which remain unexplored in the country. BBTV-infected plant tissues were sampled from banana-growing provinces (i.e., Cagayan, Isabela, Quirino, Batangas, Laguna, Rizal, Quezon, Palawan, Cebu, Leyte, and Davao del Sur) and the partial DNA-R gene of BBTV was sequenced. Analysis of all local BBTV isolates showed a nucleotide diversity (π) of 0.00721, average number of nucleotide differences (k) of 5.51984, and haplotype diversity (hd) of 0.971. Neutrality tests using Fu′s Fs and Tajima′s D showed significant and highly negative values which suggest an excess number of rare alleles due to recent population expansion or from genetic hitchhiking. Haplotype network and phylogenetic analyses revealed that the local BBTV isolates were closely related to Southeast Asian (SEA) group and exhibited a monophyletic clade with distinct haplotype grouping from other SEA sequences. However, some Indonesian and Indian reference sequences were also clustered within the Philippine BBTV group suggesting sequence homology. Results also showed that the local BBTV isolates may be categorized into three major haplotype groups (HA, HB, and HC) but only the HC group remained distinct upon comparison with other Philippine and SEA reference sequences. BBTV isolates from Quezon were the most diverse while isolates from Palawan displayed low genetic diversity indices and belonged only in the HC group. The assessment of the degree of variability among Philippine BBTV isolates will provide a reference towards the development of high-throughput BBTV detection systems as well as enable to devise plant breeding strategies to manage the current BBTV spread and variations.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic Structure and Diversity of Banana Bunchy Top Virus (BBTV) in the Philippines

Cortaga

et al. 2021

Preprint

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“…Plant diseases have been a major problem for both the export industry and producers serving domestic markets. Besides the recurrence of Foc TR4, the following diseases were reported: Moko, black sigatoka, (Stover, 1986), nematodes (Davide, 1988; Herradura et al, 2012; Aggangan et al, 2013), and bunchy top (Kohnen et al, 2013; Molina et al, 2009). The Foc TR4 had been reported in Mindanao since 2009 and affected a range of banana production systems located in the area.…”

Section: Methodsmentioning

confidence: 99%

Coordination as Management Response to the Spread of a Global Plant Disease: A Case Study in a Major Philippine Banana Production Area

2019

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An integrative management approach to the spread and emergence of global plant diseases, such as the soil-borne fungus Fusarium oxysporum f. sp. cubense tropical race 4 (Foc TR4), entails a combination of technical measures and the responsiveness and awareness of area-specific constellations supporting conditions conducive to interactions and coordination among organizations and actors with different resources and diverse interests. Responses to banana diseases are mostly studied through technical and epidemiological lenses and reflect a bias to the export industry. Some authors, however, indicate that cross-sector collaboration is crucial in responding to a disease outbreak. Earlier studies on the outbreak of diseases and natural disasters suggest that shared cognition and effective partnerships increased the success rate of response. Hence, it is important not to focus exclusively on the impacts of a pathogen at farm or field level and to shift attention to how tasks and knowledge are coordinated and shared. This paper aims to detect whether and how the emergence of Foc TR4 is a driver of coordination. The case study focuses on the interactions between a variety of banana producers and among a range of public and private actors in southern Philippines. The analysis identifies distinct forms of coordination emerging in the context of three organizational fields responding to Foc TR4, which underlie shared capacity to handle and understand the spread of a global plant disease. The research is based on qualitative key informant interviews and document analysis and on observations of instructive events in 2014–2017. Analysis of the composition and actions developed in three organizational fields leads to distinguishing three theory-driven forms of coordination: rule-based, cognition-based, and skill-based. The combination of these three forms constitutes the possibility of a collaborative community, which conditions the implementation of an integrative management approach to mitigate Foc TR4.

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“…Macropropagated plants (figure 5) and seedlings derived from field trial plants were also symptomless. (Molina et al 2009). However, the use of virus-free planting materials alone does not guarantee total protection against BBTD, and ongoing inspection and eradication programs are challenging to enact and expensive to run.…”

Section: Screening Of Wild Musa Test Plant Accessionsmentioning

confidence: 99%

“…Common strategies against the disease are quarantine, eradication of infected plants, and the use of clean planting material (Thomas, 2019). Widely used control practices in the Philippines is eradication of infected plants using bamboo sticks dipped in herbicide, and the use of clean planting materials (Aguilar et al, 2010; Molina et al, 2009). A number of studies have explored the potential of transgenic resistance to BBTV in bananas (Borth et al, 2011; Shekhawat et al, 2012; Elayabalan et al, 2013; Mware et al 2016) but to date, these advances have not been successfully transferred to a field situation.…”

Section: Introductionmentioning

confidence: 99%

Resistance of Musa balbisiana accessions of the Philippines to banana bunchy top virus

Perez

Cueva

Benjamin

et al. 2022

Preprint

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Mitigation of banana bunchy top disease is still a challenge worldwide. BBTD is caused by banana bunchy top virus the most important virus affecting banana. Currently, no cultivar or accession has complete resistance to BBTD. A total of 36 wild Musa spp accessions including 34 Musa balbisiana and two Musa acuminata subsp. errans were screened for resistance against BBTV. In greenhouse tests using viruliferious banana aphids, all Musa balbisiana accessions remained symptomless and BBTV was not detected in any of these plants by PCR at three- and six-months post-inoculation. In contrast, 100 percent disease incidence was recorded in Musa acuminata subsp. errans and in cv. Lakatan susceptible control plants. The PCR-negative Musa balbisiana were then transferred to a field with high BBTV inoculum pressure where they remained symptomless and PCR-negative for up to five years while all cv. Lakatan developed BBTD. This study confirmed the resistance of wild Musa balbisiana accessions to BBTV. It is therefore expected to provide a resource to conventional and marker assisted breeding.

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Managing Banana Bunchy Top Virus in Smallholdings in the Philippines

Cited by 10 publications

References 0 publications

Genetic Structure and Diversity of Banana Bunchy Top Virus (BBTV) in the Philippines

Genetic Structure and Diversity of Banana Bunchy Top Virus (BBTV) in the Philippines

Coordination as Management Response to the Spread of a Global Plant Disease: A Case Study in a Major Philippine Banana Production Area

Resistance of Musa balbisiana accessions of the Philippines to banana bunchy top virus

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