Haustorium initiation in the obligate parasitic plant Phelipanche ramosa involves a host-exudated cytokinin signal

Goyet, Vincent; Billard, Estelle; Pouvreau, Jean‐Bernard; Lechat, Marc-Marie; Pelletier, Sandra; Bahut, Muriel; Monteau, Fabrice; Spíchal, Lukáš; Delavault, Philippe; Montiel, Grégory; Simier, Philippe

doi:10.1093/jxb/erx359

Cited by 49 publications

(46 citation statements)

References 58 publications

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“…Except for some species that can form self-haustoria (Xiang et al, 2018), the initial step of haustorium formation is provoked by host-derived small compounds, collectively called HIFs. Several hours after recognition of HIFs, parasite roots or radicles start to show morphological changes including cell expansion, cell division, and differentiation of haustorial hairs in hemiparasites or papillae in holoparasitic genera Orobanche and Phelipanche spp., and semi-spherically shaped prehaustorial organs are formed within a few days (Riopel and Musselman, 1979; Baird and Riopel, 1985; Cui et al, 2016; Ishida et al, 2016; Goyet et al, 2017). The resultant organ is defined as “prehaustorium” or an “early haustorial structure” due to its premature architecture.…”

Section: Haustorium Developmental Processesmentioning

confidence: 99%

“…Gray boxes: not reported. Numbers indicate references: 1, Chang and Lynn (1986); 2, Albrecht et al (1999); 3, Bandaranayake et al (2010); 4, Bandaranayake et al (2012); 5, Cui et al (2016); 6, Ishida et al (2016); 7, Cui et al (2018); 8, Goyet et al (2017); 9, Salcedo-Morales et al (2013); 10, Lynn and Chang (1990); 11, Lynn et al (1981); 12, Steffens et al (1982); 13, Wada et al (2019); 14, Fernández-Aparicio et al (2016b); 15, Wrobel and Yoder (2001); 16, Keyes et al (2000).…”

Section: Hifs For Hemiparasitesmentioning

confidence: 99%

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Haustorium Inducing Factors for Parasitic Orobanchaceae

et al. 2019

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Parasitic plants in the Orobanchaceae family include devastating weed species, such as Striga , Orobanche , and Phelipanche , which infest important crops and cause economic losses of over a billion US dollars worldwide, yet the molecular and cellular processes responsible for such parasitic relationships remain largely unknown. Parasitic species of the Orobanchaceae family form specialized invasion organs called haustoria on their roots to enable the invasion of host root tissues. The process of forming haustoria can be divided into two steps, prehaustorium formation and haustorium maturation, the processes occurring before and after host attachment, respectively. Prehaustorium formation is provoked by host-derived signal molecules, collectively called haustorium-inducing factors (HIFs). Cell wall-related quinones and phenolics have been known for a long time to induce haustoria in many Orobanchaceae species. Although such phenolics are widely produced in plants, structural specificities exist among these molecules that modulate their competency to induce haustoria in different parasitic plant species. In addition, the plant hormone cytokinins, structurally distinct from phenolic compounds, also trigger prehaustorium formation in Orobanchaceae. Recent findings demonstrate their involvement as rhizopsheric HIFs for Orobanche and Phelipanche species and thus address new activities for cytokinins in haustorium formation in Orobanchaceae, as well as in rhizospheric signaling. This review highlights haustorium-inducing signals in the Orobanchaceae family in the context of their host origin, action mechanisms, and species specificity.

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Section: Haustorium Developmental Processesmentioning

confidence: 99%

Section: Hifs For Hemiparasitesmentioning

confidence: 99%

Haustorium Inducing Factors for Parasitic Orobanchaceae

et al. 2019

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“…Yet, no receptor has been described in parasitic plants for ITC. To connect to their host roots, germinating seeds elongate a radicle and form appendices, a.k.a haustorium, in response to other rhizosphere signals including cytokinin-related compounds ( Goyet et al., 2017 ; Goyet et al., 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Populations of the Parasitic Plant Phelipanche ramosa Influence Their Seed Microbiota

et al. 2020

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Seeds of the parasitic weed Phelipanche ramosa are well adapted to their hosts because they germinate and form haustorial structures to connect to roots in response to diverse host-derived molecular signals. P. ramosa presents different genetic groups that are preferentially adapted to certain hosts. Since there are indications that microbes play a role in the interaction especially in the early stages of the interaction, we studied the microbial diversity harbored by the parasitic seeds with respect to their host and genetic group. Twenty-six seed lots from seven cropping plots of three different hosts—oilseed rape, tobacco, and hemp—in the west of France were characterized for their bacterial and fungal communities using 16S rRNA gene and ITS (Internal transcribed spacer) sequences, respectively. First seeds were characterized genetically using twenty microsatellite markers and phenotyped for their sensibility to various germination stimulants including strigolactones and isothiocyanates. This led to the distinction of three P. ramosa groups that corresponded to their host of origin. The observed seed diversity was correlated to the host specialization and germination stimulant sensitivity within P. ramosa species. Microbial communities were both clustered by host and plot of origin. The seed core microbiota was composed of seventeen species that were also retrieved from soil and was in lower abundances for bacteria and similar abundances for fungi compared to seeds. The host-related core microbiota of parasitic seeds was limited and presumably well adapted to the interaction with its hosts. Two microbial candidates of Sphingobacterium species and Leptosphaeria maculans were especially identified in seeds from oilseed rape plots, suggesting their involvement in host recognition and specialization as well as seed fitness for P. ramosa by improving the production of isothiocyanates from glucosinolates in the rhizosphere of oilseed rape.

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“…By contrast, obligate parasites such as Striga, Orobanche and Phelipanche spp. form a single terminal haustorium at the tip of an emerging radical apex after germination (Dorr, 1997;Fernandez-Aparicio et al, 2016;Goyet et al, 2017). The terminal haustorium has to successfully invade and parasitize the host to further support vegetative growth.…”

Section: Introductionmentioning

confidence: 99%

Host lignin composition affects haustorium induction in the parasitic plants Phtheirospermum japonicum and Striga hermonthica

et al. 2018

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Parasitic plants in the family Orobanchaceae are destructive weeds of agriculture worldwide. The haustorium, an essential parasitic organ used by these plants to penetrate host tissues, is induced by host-derived phenolic compounds called haustorium-inducing factors (HIFs). The origin of HIFs remains unknown, although the structures of lignin monomers resemble that of HIFs. Lignin is a natural phenylpropanoid polymer, commonly found in secondary cell walls of vascular plants. We therefore investigated the possibility that HIFs are derived from host lignin. Various lignin-related phenolics, quinones and lignin polymers, together with nonhost and host plants that have different lignin compositions, were tested for their haustorium-inducing activity in two Orobanchaceae species, a facultative parasite, Phtheirospermum japonicum, and an obligate parasite, Striga hermonthica. Lignin-related compounds induced haustoria in P. japonicum and S. hermonthica with different specificities. High concentrations of lignin polymers induced haustorium formation. Treatment with laccase, a lignin degradation enzyme, promoted haustorium formation at low concentrations. The distinct lignin compositions of the host and nonhost plants affected haustorium induction, correlating with the response of the different parasitic plants to specific types of lignin-related compounds. Our study provides valuable insights into the important roles of lignin biosynthesis and degradation in the production of HIFs.

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Haustorium initiation in the obligate parasitic plant Phelipanche ramosa involves a host-exudated cytokinin signal

Abstract: The formation of the haustorium in holoparasitic plants as demonstrated in Phelipanche ramosa is initiated through perception of a host-exudated cytokinin and a cytokinin signaling response.

Cited by 49 publications

References 58 publications

Haustorium Inducing Factors for Parasitic Orobanchaceae

Haustorium Inducing Factors for Parasitic Orobanchaceae

Populations of the Parasitic Plant Phelipanche ramosa Influence Their Seed Microbiota

Host lignin composition affects haustorium induction in the parasitic plants Phtheirospermum japonicum and Striga hermonthica

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