Results 181 to 190 of about 6,455 (211)

Graniferous tracheary elements in the haustorium of the santalaceae

Planta, 1978
Haustoria of santalaceous root parasites examined have unusual tracheary elements containing granules within their lumina. Benson (1910) thought the granules were starch and that the cells also contained an enucleate protoplast. She believed the cells combined the functions of phloem and xylem conduits and so named them "phloeotracheides" (sic).
B A, Fineran, B E, Juniper, S, Bullock
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Haustorium Initiation and Early Development

2013
The haustoria of the Orobanchaceae are formed in response to chemical and physical stimuli provided by host roots. Several quinones and phenols have been identified that induce haustorium development, suggesting that parasites recognise a multiplicity of molecules in the rhizosphere associated with host roots.
Pradeepa C. G. Bandaranayake, John I. Yoder   +1 more
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Transcriptome analysis of mistletoe (Viscum album) haustorium development

Horticulture, Environment, and Biotechnology, 2014
The haustorium is a specific organ for penetration of host tissue in parasitic plants. To better understand the molecular mechanisms of the establishment of host-parasite relationships using gene expression profiles, early stage haustorium germination from mature mistletoe seeds was examined. We have generated a cDNA library that is an excellent source
Suk Min Ko, Yong Kook Kwon, Jong Hyun Kim, In-Ja Song, Hyo-Yeon Lee, Dong-Woog Choi, Jang R. Liu, Suk Weon Kim   +7 more
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Anatomical Studies of Haustorium Ontogeny and the Remarkable Mode of Penetration of the Haustorium inNuytsiafloribunda(Labill.) R. Br.

Botanica Acta, 1989
AbstractThe development and structure of secondary haustoria ofNuytsia floribundaare described and compared with other Santalalean haustoria.After establishing contact with the host root, cortical folds of the haustorium grow around the root in separate directions and fuse forming a ring around it.
Christine Beyer, W. Forstreuter, H. Chr Weber   +2 more
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Anatomy of the haustorium of Jodina rhombifolia (Santalaceae)

Nordic Journal of Botany, 2004
The structure of the haustorium of Jodina rhombifolia in material from Argentina was analysed. Self‐haustoria and interespeciñc haustoria, the latter on Celtis tala and Scutia buxifolia , were detected.
María Luján Luna, Gabriela Elena Giudice   +1 more
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The Host-Haustorium Interface in Powdery Mildews

Australian Journal of Plant Physiology, 1989
The powdery mildew fungi have proven to be a useful model system for studies of the host-parasite interface in biotrophic parasitism. Investigation of the interface has requrred the development of novel experimental approaches, for example the isolation of populations of haustoria in association with other interface components and the chemical and ...
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Phloem in the haustorium of Castilleja (Scrophulariaceae)

Canadian Journal of Botany, 1971
This note documents for the first time the presence of phloem in the haustorium of Castilleja sulphurea Rydb. From electron microscope studies the phloem was found to occur in the internal portion of the endophyte and on the periphery adjacent to cortical cells of the host.
Job Kuijt, David R. Dobbins
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Permeability of the haustorium-host interface in powdery mildews

Physiological and Molecular Plant Pathology, 1987
Abstract The extent to which uranyl ions and peroxidase permeated haustorial complexes isolated from Pisum sativum infected with Erysiphe pisi was determined by transmission electron microscopy (TEM). Freshly isolated complexes were treated with uranyl acetate, either directly, or after treatment with cell wall degrading enzymes, or with Triton ...
J.L. Gay, J.M. Manners
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Haustorium Invasion into Host Tissues

2013
The invasive phase of haustorium development starts when the young haustorium adheres to host roots by means of specialized attachment devices employing adhesive substances. A group of intrusive cells then enzymatically and mechanically penetrate host tissues.
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The haustorium and the chemistry of host recognition in parasitic angiosperms

Journal of Chemical Ecology, 1986
Two parasitic angiosperms,Agalinis purpurea (Scrophulariaceae) andStriga asiatica (Scrophulariaceae), are compared as to the chemical recognition events involved in host selection.Agalinis is a hemiparasite which can mature to seed-set without a host, whereasStriga is a holoparasite and survives for only a very limited time without a host.
M, Chang, D G, Lynn
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