S-RNase is secreted from transmitting tract cells into the intercellular spaces after pollen tubes enter the style in apple (Malus pumila Mill.)

• Published in: The journal of horticultural science & biotechnology Vol. 82; no. 3; pp. 433 - 438
• Main Authors: Li, Tian-Zhong, Katoh, Naoki, Miyairi, Kazuo, Okuno, Toshikatsu
• Format: Journal Article
• Language: English
• Published: Taylor & Francis 2007
• Subjects: apples; biotechnology; cross pollination; cultivars; cytoplasm; electron microscopy; extracellular space; gametophytes; horticulture; immunohistochemistry; light microscopy; Malus pumila; pistil; pollen tubes; ribonucleases

Apple shows gametophytic self-incompatibility (GSI). The phenomenon of GSI in pistils is controlled by S-RNases expressed specifically in the style. The localisation and redistribution of S-RNases in the styles of the apple cultivar 'Starking Delicious', before and after pollination, were...