Development of Cuscuta species on a partially incompatible host: induction of xylem transfer cells

Christensen, Niels Jørgen; Dörr, Inge; Hansen, Michael; Kooij, T.A.W. Van der; Schulz, Alexander

doi:10.1007/s00709-002-0045-4

Cited by 27 publications

(23 citation statements)

References 22 publications

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“…Hypertrophy and increase in the number of vascular bundles in Momordica stems was clearly induced by Cuscuta hypae. No previous reports of vascular tissue differentiation caused by plantÁ plant interactions (especially induced by Cuscuta hypae) are available, although vascular tissue development of Cuscuta itself has been studied (Christensen et al 2003). Interestingly, we observed similar hypertrophy in interactions between Cuscuta and other members of the Cucurbitaceae family (e.g.…”

Section: Morphological Change and Vascular Bundle Differentiation Insupporting

confidence: 64%

Morphological and plant hormonal changes during parasitization by Cuscuta japonica on Momordica charantia

Furuhashi

Kojima

Sakakibara

et al. 2013

Journal of Plant Interactions

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The holostemparasitic plant Cuscuta parasitizes various plants and sucks nutrients from the host stem. We used Cuscuta japonica as the parasite and Momordica charantia as the host plant, and described their interaction. The parasitized Momordica stems started swelling as a hypertrophic response within 3 days after parasitization. Concurrently, the Cuscuta stem grew rapidly and developed bigger scale leaves than usual. Parasitized Momordica stems reduced photosynthetic activity. Histological observation revealed no programmed cell death but an increased number of vascular bundles in the Momordica stem, especially near the Cuscuta hyphae. The defensive response of Momordica mainly involved the SA pathway. Drastic increase of tZ-and DZ-type cytokinins in Momordica stems would play an important role for hypertrophy. Cuscuta had higher cZ endogenously and our results imply that each subtype of CK might play different roles during parasitization process. Comprehensive plant hormone analysis provides new insights into plant interaction studies.

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Section: Morphological Change and Vascular Bundle Differentiation Insupporting

confidence: 64%

Morphological and plant hormonal changes during parasitization by Cuscuta japonica on Momordica charantia

Furuhashi

Kojima

Sakakibara

et al. 2013

Journal of Plant Interactions

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“…Ultrastructural studies have indicated that dodder-searching hyphae contacting host sieve elements differentiate into transfer cells, but do not make open connections to the host phloem (Dö rr, 1990). Thus, it has been proposed that content of the host phloem must cross host and parasite membranes in an apoplastic transfer process (Christensen et al, 2003). However, Birschwilks et al (2006) argue that their observed rates of radiolabeled metabolite, dye, and virus translocation from host to dodder can only be explained by symplastic transport.…”

Section: Discussionmentioning

confidence: 99%

Cross-Species Translocation of mRNA from Host Plants into the Parasitic Plant Dodder

2006

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An intriguing new paradigm in plant biology is that systemically mobile mRNAs play a role in coordinating development. In this process, specific mRNAs are loaded into the phloem transport stream for translocation to distant tissues, where they may impact on developmental processes. However, despite its potential significance for plant growth regulation, mRNA trafficking remains poorly understood and challenging to study. Here, we show that phloem-mobile mRNAs can also traffic between widely divergent species from a host to the plant parasite lespedeza dodder (Cuscuta pentagona Engelm.). Reverse transcriptionpolymerase chain reaction and microarray analysis were used to detect specific tomato (Lycopersicon esculentum Mill.) transcripts in dodder grown on tomato that were not present in control dodder grown on other host species. Foreign transcripts included LeGAI, which has previously been shown to be translocated in the phloem, as well as nine other transcripts not reported to be mobile. Dodders are parasitic plants that obtain resources by drawing from the phloem of a host plant and have joint plasmodesmata with host cortical cells. Although viruses are known to move between dodder and its hosts, translocation of endogenous plant mRNA has not been reported. These results point to a potentially new level of interspecies communication, and raise questions about the ability of parasites to recognize, use, and respond to transcripts acquired from their hosts.Dodders are obligate stem parasitic plants that have close physical linkages with their hosts. Because of their limited photosynthetic ability and dependence upon the host plant for water and nutrients, a dodder seedling must form connections with a host within several days after germination. Once established on the host, the dodder root system senesces and the mature vegetative plant consists entirely of a yelloworange stem that twines around host stems and leaves.

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“…More recently, such radiotracers have been replaced by xylem-and phloemspecific fluorescence reagents (e.g. Texas red and Carboxyfluorescein) (Haupt et al 2001;Christensen et al 2003;Birschwilks et al 2007).…”

Section: Introductionmentioning

confidence: 99%

The parasitic mechanism of the holostemparasitic plantCuscuta

Furuhashi

Furuhashi²,

Weckwerth

2011

Journal of Plant Interactions

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Cuscuta is a stem holoparasitic plant without leaves or roots, which develops a haustorium and sucks nutrients from host plants. The genus Cuscuta comprises about 200 species, many of which can cause severe problems for certain crops. The parasitic process in Cuscuta begins in finding and attaching to a host plant and then developing a haustorium. The process does not always require any chemical signal, but does require a light signal. Finding a host involves detecting the lower red light:far-red light ratio near a potential host plant by phytochrome. A contact signal is also necessary for haustorium induction. Apparently, cytokinin increase is downstream of the light and contact signal and is critical for haustorium induction. This pathway, however, appears to be slightly different from a standard pathway. The direct connection between Cuscuta and its host involves both the xylem and phloem, and mRNA and proteins can translocate. Several features indicate that Cuscuta is a useful model plant for parasite plant research as well as plantÁplant interaction research. These include the simple anatomical structure and seedling development, no chemical requirement for haustorium induction, and the wide range of host plants.

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Development of Cuscuta species on a partially incompatible host: induction of xylem transfer cells

Cited by 27 publications

References 22 publications

Morphological and plant hormonal changes during parasitization by Cuscuta japonica on Momordica charantia

Morphological and plant hormonal changes during parasitization by Cuscuta japonica on Momordica charantia

Cross-Species Translocation of mRNA from Host Plants into the Parasitic Plant Dodder

The parasitic mechanism of the holostemparasitic plantCuscuta

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