Plasma membrane H+-ATPases sustain pollen tube growth and fertilization

Cytosolic ion gradients in growing pollen tubes are thought to be required for polar growth. Here the authors show that the Arabidopsis plasma membrane H+ ATPases, AHA6, AHA8, and AHA9, maintain tip-to-shank proton gradients, oscillations in cytosolic pH and actin organization to enable pollen tube...

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Main Authors: Robert D. Hoffmann, Maria Teresa Portes, Lene Irene Olsen, Daniel Santa Cruz Damineli, Maki Hayashi, Custódio O. Nunes, Jesper T. Pedersen, Pedro T. Lima, Cláudia Campos, José A. Feijó, Michael Palmgren
Format: article
Language:EN
Published: Nature Portfolio 2020
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Online Access:https://doaj.org/article/19bd39f44f6b4640a9a224a9ee668f06
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Summary:Cytosolic ion gradients in growing pollen tubes are thought to be required for polar growth. Here the authors show that the Arabidopsis plasma membrane H+ ATPases, AHA6, AHA8, and AHA9, maintain tip-to-shank proton gradients, oscillations in cytosolic pH and actin organization to enable pollen tube elongation.