About: Disruption of actin filaments induces mitochondrial Ca2+ release to the cytoplasm and [Ca2+]c changes in Arabidopsis root hairs

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We found that treatments with latrunculin B (Lat-B) and jasplakinolide (Jas), which depolymerize and polymerize actin filaments respectively, decreased membrane potential and Ca2+ stores in the mitochondria of Arabidopsis root hairs. These treatments induced an instantaneous increase of cytoplasmic Ca2+, followed by a continuous decrease. All of these effects were inhibited by pretreatment with cyclosporin A, a blocker of the mitochondrial permeability transition pore (mPTP). Moreover, we found there was a Ca2+ concentration gradient in mitochondria from the tip to the base of the root hair, and this could be disrupted by actin-acting drugs. We conclude that the disruption of actin filaments caused by Lat-B or Jas promoted irreversible opening of the mPTP, resulting in mitochondrial Ca2+ release into the cytoplasm, and consequent changes in [Ca2+]c. Thus, normal polymerization and depolymerization of actin filaments are essential for mitochondrial Ca2+ storage in root hairs. We found that treatments with latrunculin B (Lat-B) and jasplakinolide (Jas), which depolymerize and polymerize actin filaments respectively, decreased membrane potential and Ca2+ stores in the mitochondria of Arabidopsis root hairs. These treatments induced an instantaneous increase of cytoplasmic Ca2+, followed by a continuous decrease. All of these effects were inhibited by pretreatment with cyclosporin A, a blocker of the mitochondrial permeability transition pore (mPTP). Moreover, we found there was a Ca2+ concentration gradient in mitochondria from the tip to the base of the root hair, and this could be disrupted by actin-acting drugs. We conclude that the disruption of actin filaments caused by Lat-B or Jas promoted irreversible opening of the mPTP, resulting in mitochondrial Ca2+ release into the cytoplasm, and consequent changes in [Ca2+]c. Thus, normal polymerization and depolymerization of actin filaments are essential for mitochondrial Ca2+ storage in root hairs. (en)
Title	Disruption of actin filaments induces mitochondrial Ca2+ release to the cytoplasm and [Ca2+]c changes in Arabidopsis root hairs Disruption of actin filaments induces mitochondrial Ca2+ release to the cytoplasm and [Ca2+]c changes in Arabidopsis root hairs (en)
skos:prefLabel	Disruption of actin filaments induces mitochondrial Ca2+ release to the cytoplasm and [Ca2+]c changes in Arabidopsis root hairs Disruption of actin filaments induces mitochondrial Ca2+ release to the cytoplasm and [Ca2+]c changes in Arabidopsis root hairs (en)
skos:notation	RIV/61989592:15310/10:10212491!RIV11-MSM-15310___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ED0007/01/01)
http://linked.open...iv/cisloPeriodika	53
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Šamaj, Jozef
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	254671
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/10:10212491
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	root hairs; Arabidopsis; Ca2+; mitochondrion; actin (en)
http://linked.open.../riv/klicoveSlovo	actin mitochondrion Arabidopsis Ca2+ root hairs
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[7F8E0DCB6916]
http://linked.open...i/riv/nazevZdroje	B M C Plant Biology
http://linked.open...in/vavai/riv/obor	EB
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	9 (xsd:int)
http://linked.open...vavai/riv/projekt	Centre of the Region Haná for Biotechnological and Agricultural Research
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	10
http://linked.open...iv/tvurceVysledku	Šamaj, Jozef Liu, Peng Wang, Yuqing Baluška, František Lin, Jinxing Ling, Yu Wang, Qinli Zhang, Haiyan Zhu, Yingfang
http://linked.open...ain/vavai/riv/wos	000278022700001
issn	1471-2229
number of pages	13 (xsd:int)
http://localhost/t...ganizacniJednotka	15310

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