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022 _a0176-1617
040 _aMSU
_bEnglish
_cMSU
_erda
050 0 0 _aQK711.2 JOU
100 1 _aNosek, Michał
_eauthor
245 1 0 _aVeinal–mesophyll interaction under biotic stress
_ccreated by Michał Nosek, Piotr Rozpądek, Andrzej Kornaś, Elżbieta Kuźniak, Annegret Schmitt and Zbigniew Miszalski
264 1 _aAmsterdam:
_bElsevier GmbH,
_c2015.
336 _2rdacontent
_atext
_btxt
337 _2rdamedia
_aunmediated
_bn
338 _2rdacarrier
_avolume
_bnc
440 _aJournal of plant physiology
_vVolume 185
520 3 _aAccording to microscopic observations, germinating hyphae of Botrytis cinerea, though easily penetrating Mesembryanthemum crystallinum mesophyll tissue, are limited in growth in mid-ribs and only occasionally reach vascular bundles. In mid-ribs of C3 and CAM leaves, we found significantly lower rbcL (large RubisCO subunit) abundance. Moreover, in CAM leaves, minute transcript contents for pepc1 (phosphoenolpyruvate carboxylase) and nadpme1 (malic enzyme) genes found in the mid-ribs suggest that they perform β-carboxylation at a low rate. The gene of the main H2O2-scavenging enzyme, catL (catalase), showed lower expression in C3 mid-rib parts in comparison to mesophyll. This allows maintenance of higher H2O2 quantities in mid-rib parts. In C3 leaves, pathogen infection does not impact photosynthesis. However, in CAM plants, the expression profiles of rbcL and nadpme1 were similar under biotic stress, with transcript down-regulation in mid-ribs and up-regulation in mesophyll (however, in case of rbcL not significant). After B. cinerea infection in C3 plants, transcripts for both antioxidative proteins strongly increased in mid-ribs, but not in mesophyll. In infected CAM plants, a significant transcript increase in the mesophyll was parallel to its decrease in the mid-rib region (however, in the case of catL this was not significant). Pathogen infection modified the expression of carbon and ROS metabolism genes in mid-ribs and mesophyll, resulting in the establishment of successful leaf defense.
650 _aBotrytis cinerea; C(3); CAM
_vMesembryanthemum crystallinum
_xVascular bundles.
700 1 _aRozpądek, Piotr
_eco-author
700 1 _aKornaś, Andrzej
_eco-author
700 1 _aKuźniak, Elżbieta
_eco-author
700 1 _aSchmitt, Annegret
_eco-author
700 1 _aMiszalski, Zbigniew
_eco-author
856 _uhttps://doi.org/10.1016/j.jplph.2015.06.016
942 _2lcc
_cJA
999 _c168978
_d168978