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The Role of Cyclic Nucleotide-Gated Ion Channels in Plant Immunity

Molecular Plant 2011年第3期4卷 442-452页

作者： Wolfgang Moeder william urquhart Huoi Ung Keiko Yoshioka Department of Cell and Systems Biology University of Toronto 25 Willcocks Street Toronto ON M5S 3B2 Canada Center for the Analysis of Genome Evolution and Function (CAGEF) University of Toronto 25 Willcocks Street Toronto ON M5S 3B2 Canada

Since the first plant cyclic nucleotide-gated ion channel （CNGC）, HvCBT1, was identified as a calmodulin bind- ing protein, more than a decade has passed and a substantial amount of work has been done to understand the molecular nature and function of these channel proteins. Based on electrophysiological and heterologous expression analyses, plant CNGCs function as non-selective cation channels and, so far, their biological roles have been reported in defense responses, development, and ion homeostasis. Forward genetic approaches identified four AtCNGCs （AtCNGC2, 4, 11, and 12） to be involved in plant immunity, as null mutants for AtCNGC2, 4, 11, and 12 as well as a gain-of- function mutant for AtCNGC11 and 12 exhibited alterations in defense responses. Since ion flux changes have been reported as one of the early events upon pathogen recognition and also are an essential component for the activation of defense responses, the involvement of CNGCs in these ion flux changes has been suggested. However, the recent detailed characterization of null mutants suggested a more complex involvement of this channel family. In this review, we focus on the discoveries and character- ization of these CNGC mutants and discuss possible roles of CNGCs as components in plant immunity.

关键词： CNGC cyclic nucleotide-gated ion channel plant immunity DND1 DND2 HLM1 CPR22 ED51.

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Linking uplift and mineralisation at the Mount Novit Zn-Pb-Ag Deposit,Northern Australia:Evidence from geology,U-Pb geochronology and sphalerite geochemistry

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Geoscience Frontiers 2022年第2期13卷 333-350页

作者： Bradley Cave william Perkins Richard Lilly Department of Earth Sciences University of AdelaideAdelaideSAAustralia Geological Survey of Queensland BrisbaneQLDAustralia

The subeconomic Mount Novit Zn-Pb-Ag deposit is located approximately 20 km south of Mount Isa,*** contrast to the nearby Mount Isa,Hilton and George Fisher Zn-Pb-Ag deposits,mineralisation at Mount Novit is situated to the west of the regional-scale Mount Isa Fault and is hosted in the Moondarra Siltstone as opposed to the urquhart ***-grade(10 wt.%Zn+Pb)mineralisation occurs as a matrix supported breccia dominated by sphalerite and pyrrhotite with galena,pyrite,and ***-situ U-Pb geochronology was completed on apatite and two textural varieties of ***-grained(10 ppm),possibly reflecting the leaching of the metals from an underlying basement *** GGIMFis geothermometer(Frenzel et al.,2016)produced a mean formation temperature of 345±52℃.The timing and temperature of Zn-Pb-Ag mineralisation is consistent with the age and cooling temperature of apatite presented in this *** on these correlations,we

关键词： Mount Isa Mount Novit Zn-Pb-Ag mineralisation Monazite Apatite Geochronology

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