NDLI: Histopathological studies of the process of Phytophthora palmivora infection in oil palm

Content Provider	Springer Nature Link
Author	Sarria, G. A. Martinez, G. Varon, F. Drenth, A. Guest, D. I.
Copyright Year	2015
Abstract	The predominant disease affecting oil palms in Colombia is bud rot, a decay of the growing leaf tissues that may eventually reach the meristem. Previous studies have suggested many biotic and abiotic causes, but Koch’s Postulates have recently confirmed Phytophthora palmivora as the primary pathogen of bud rot. In this paper, we describe the infection process in immature leaflets inoculated with zoospores of P. palmivora using light microscopy and scanning electron microscopy. Initially, zoospores were attracted primarily to leaf trichomes, where some developed appressorium-like structures and subsequently penetrated the tissue. Germinated zoospores were also observed penetrating the stomata or intercellular spaces. After penetration hyphae colonized the intercellular leaf spaces, followed by intracellular invasion, penetrating to the vascular bundles and then spreading throughout the host tissue. Between 12 and 24 h after inoculation, hyphae emerged from the surface of the leaflet through the stomata, trichomes and intercellular spaces. Within 36 and 48 h, sporangia, chlamydospores, and newly released zoospores were observed, starting a new cycle of secondary infections. This sequence was consistently observed in repeated experiments. We suggest that in the field collection of moisture at the base of emerging leaflets stimulates the release of zoospores and infection. Colonization is restricted once the leaflet emerges, leaving dormant chlamydospores and hyphae in small necrotic lesions. Successive rain events stimulate the formation of new generations of sporangia, zoospores and infections, which, if frequent enough, may completely colonize the bud area. Subsequent colonization of infected tissues by opportunistic bacteria and fungi increases the severity of bud rot symptoms. The information presented here provides an overview of histopathological aspects of the early infections process of P. palmivora in detached immature leaflets.
Starting Page	39
Ending Page	51
Page Count	13
File Format	PDF
ISSN	09291873
Journal	European Journal of Plant Pathology
Volume Number	145
Issue Number	1
e-ISSN	15738469
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-10-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	PC E. guineensis Infection Plant Pathology Plant Sciences Ecology Agriculture Life Sciences
Content Type	Text
Resource Type	Article
Subject	Plant Science Horticulture Agronomy and Crop Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Assessment of tolerance to bud rot in oil palm under field conditions

Pathogenicity of plant and soil isolates of Phytophthora parasitica on tomato and pepper

Effects of inbreeding on growth and yield of oil palm : Inbreeding of oil palm

Assessment of yocoboue wild oil palm (Elaeis guineensis Jacq.) from Côte d'Ivoire

Putative pathogenicity genes of Phytophthora cinnamomi identified via RNA-Seq analysis of pre-infection structures

QTLs for oil yield components in an elite oil palm (Elaeis guineensis) cross

Phytophthora blight of southern star (Oxypetalum caeruleum) caused by Phytophthora palmivora in Japan

Rapid Screening of Cacao Genotypes for Field Resistance to Phytophthora palmivora Using Leaves, Twigs and Roots

Pathogenic diversity of Phytophthora sojae pathotypes from Brazil

Histopathological studies of the process of Phytophthora palmivora infection in oil palm

Similar Documents

Assessment of tolerance to bud rot in oil palm under field conditions

Pathogenicity of plant and soil isolates of Phytophthora parasitica on tomato and pepper

Effects of inbreeding on growth and yield of oil palm : Inbreeding of oil palm

Assessment of yocoboue wild oil palm (Elaeis guineensis Jacq.) from Côte d'Ivoire

Putative pathogenicity genes of Phytophthora cinnamomi identified via RNA-Seq analysis of pre-infection structures

QTLs for oil yield components in an elite oil palm (Elaeis guineensis) cross

Phytophthora blight of southern star (Oxypetalum caeruleum) caused by Phytophthora palmivora in Japan

Rapid Screening of Cacao Genotypes for Field Resistance to Phytophthora palmivora Using Leaves, Twigs and Roots

Pathogenic diversity of Phytophthora sojae pathotypes from Brazil

Histopathological studies of the process of Phytophthora palmivora infection in oil palm