Evidence that molecular components of papillae may be involved in ml-o resistance to barley powdery mildew

Aist, James R.; Gold, R. E.; Bayles, Carol J.; Morrison, George H.; Chandra, Subhash; Israel, Herbert W.

doi:10.1016/0885-5765(88)90040-9

Cited by 62 publications

(21 citation statements)

References 27 publications

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“…Plant cells respond to fungal pathogen inoculation by activating several specific endocellular processes that have been implicated as mechanisms of disease resistance (Aist and Bushnell 1991). The latest progress in this field has unequivocally confirmed that crucial events, which determine the character of further advancement of host-pathogen interactions, are accomplished very early after the initiation of fungal infection.…”

Section: Discussionmentioning

confidence: 90%

Rapid reorganization of microtubular cytoskeleton accompanies early changes in nuclear ploidy and chromatin structure in postmitotic cells of barley leaves infected with powdery mildew

et al. 1995

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Rapid reorganization of microtubular cytoskeleton accompanies early changes in nuclear ploidy and chromatin structure in postmitotic cells of barly leaves infected with powdery mildew. Baluska, F.; Bacigalova, K; Oud, J.L.; Hauskrecht, M.; Kubica, S. Published in: Protoplasma DOI:10.1007/BF01272854 Link to publication Citation for published version (APA):Baluska, F., Bacigalova, K., Oud, J. L., Hauskrecht, M., & Kubica, S. (1995). Rapid reorganization of microtubular cytoskeleton accompanies early changes in nuclear ploidy and chromatin structure in postmitotic cells of barly leaves infected with powdery mildew. Protoplasma, 185, 140-151. DOI: 10.1007/BF01272854 General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Summary. Post-mitotic ePidermal cells of barley leaves were found to contain, in addition to cortical microtubules (CMTs), distinct arrays of endoplasmic microtubules (EMTs). These encircle nuclei and continuously merge into the CMT arrays that underly the plasmalemma. Detailed three-dimensional reconstruction of both types of MTs during fungal infection showed that profound and very rapid MT rearrangements occurred especially in the case of incompatible (resistant) barley-powdery mildew genotype combination. The most early MT responses, followed by their subsequent complete disintegration, were recorded around nuclei. These events might be relevant for the induction of such nuclear processes as onset of DNA synthesis and nuclear chromatin condensation. Observed pattern of early infection events, as well as less prominent responses in the case of compatible (susceptible) barley-powdery mildew genotype combination, both findings suggest that rapid reorganization of the MT cytoskeleton could be involved in recognition of the fungus by host cells and in the initiation of resistance responses in barley leaves. We hypothesize that the integrity and dynamics of the MT cytoskeleton, especially of its perinuclear part, might participate in control mechanisms involved in activation of resistance genes.

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Section: Discussionmentioning

confidence: 90%

Rapid reorganization of microtubular cytoskeleton accompanies early changes in nuclear ploidy and chromatin structure in postmitotic cells of barley leaves infected with powdery mildew

et al. 1995

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“…However, whether this compound can sufficiently diffuse through the cell wall area above the papilla proper appears questionable as the existing wall becomes also impregnated with polymerized phenylpropanoids (e.g. Aist et al, 1988;Stein et al, 1993). As a more likely alternative option, the orthosilicic acid required may result from mobilization of the rich vacuolar stores of soluble silicates.…”

Section: Discussionmentioning

confidence: 99%

“…This plug represents the papilla proper and is visible in light microscopy. The papillae consist mainly of callose, certain proteins, lignin-like polymerized phenylpropanoids (Aist et al, 1988), and silica. In plants, the latter occurs as the hydrated amorphous polymer of orthosilicic acid known in minerals as opal, (SiO 2 ) 1 ÁnH 2 O.…”

Section: Introductionmentioning

confidence: 99%

Silica deposition by a strongly cationic proline‐rich protein from systemically resistant cucumber plants

et al. 2003

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SummaryInfection of one leaf of cucumber (Cucumis sativa) plants can render other leaves resistant to various pathogens. This so-called systemic acquired resistance (SAR) can be functionally mimicked by certain chemicals. All these treatments enhanced expression of a gene encoding a novel proline-rich protein (PRP1) which has C-terminal repetitive sequences containing an unusually high amount of lysine and arginine residues. Antibodies raised against a synthetic peptide derived from four of the repetitive sequences cross-reacted mainly with a cell wall polypeptide of an apparent MW of 8 kDa. The protein accumulated upon SAR induction, though it does not appear to take part in oxidative protein cross-linking, at least in the hypocotyl tissue. The synthetic peptide derived from the repetitive sequences was able to polymerize orthosilicic acid to insoluble silica, a property not resulting directly from the primary protein sequence, but rather from the high positive charge density. Our results suggest that during induction of SAR, the synthesis of a strongly cationic PRP prepares the cell walls for enhanced silica deposition which is known to participate in cell wall reinforcement, localized at the site of attempted penetration of fungi into epidermal cells. Constitutive accumulation of related PRPs may function in silica deposition during certain developmental stages, a process important for various physiological functions of green plants.

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“…Papillae are microscopically visible as appositions at the cytoplasmic side of the cell wall and contain a variety of materials (callose, proteins, phenolic polymers, silicon). Papillae formation also in-* Supported by Deutsche Forschungsgemeinschaft and Fonds cludes the incorporation of autofluorescent lignin-like polymers into the existing cell wall around the appressoria (for refs., see Aist et al, 1988;Kauss, 1990;Nicholson and Hammerschmidt, 1992;Stein et al, 1993).…”

mentioning

confidence: 99%

Influence of Salicylic Acid on the Induction of Competence for H2O2 Elicitation (Comparison of Ergosterol with Other Elicitors)

Kauss

Jeblick

1996

Plant Physiology

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(Kolattukudy et al., 1995). The cuticle and outer epidermal cell wall beneath the appressorium are subsequently penetrated. This process can evoke two different syndromes of biochemical responses that represent a first line of plant defense at the leve1 of the infected cell. The epidermal cell may either undergo a hypersensitive response associated with programed cell death or the cell wall can be reinforced at the site of attempted penetration. The latter process is associated with the arrest of penetrating fungal hyphae and, thus, survival of the attacked cell. This local reinforcement of the cell wall is called papillae formation. Papillae are microscopically visible as appositions at the cytoplasmic side of the cell wall and contain a variety of materials (callose, proteins, phenolic polymers, silicon). Papillae formation also in-* Supported by Deutsche Forschungsgemeinschaft and Fonds

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Evidence that molecular components of papillae may be involved in ml-o resistance to barley powdery mildew

Cited by 62 publications

References 27 publications

Rapid reorganization of microtubular cytoskeleton accompanies early changes in nuclear ploidy and chromatin structure in postmitotic cells of barley leaves infected with powdery mildew

Rapid reorganization of microtubular cytoskeleton accompanies early changes in nuclear ploidy and chromatin structure in postmitotic cells of barley leaves infected with powdery mildew

Silica deposition by a strongly cationic proline‐rich protein from systemically resistant cucumber plants

Influence of Salicylic Acid on the Induction of Competence for H2O2 Elicitation (Comparison of Ergosterol with Other Elicitors)

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