Cahoon A Bruce, Cunningham Katherine A, Stern David B
Boyce Thompson Institute for Plant Research, Tower Road, Ithaca, NY 14853, USA.
Plant Cell Physiol. 2003 Jan;44(1):93-5. doi: 10.1093/pcp/pcg003.
The plastid gene clpP is widely regarded as essential for chloroplast function and general plant cell survival. In this note we provide evidence that certain lines of non-photosynthetic maize (Zea mays) Black Mexican Sweet (BMS) suspension cells do not carry clpP in their plastid genomes. We also discuss several incidences in the literature where clpP is either missing or not expressed in other non-green cell lines and plants. We conclude that clpP is not required for general plant cell survival but instead may only be essential for the development and/or function of plastids with active gene expression.
质体基因clpP被广泛认为对叶绿体功能和植物细胞整体存活至关重要。在本报告中，我们提供证据表明，某些非光合玉米（Zea mays）黑墨西哥甜玉米（BMS）悬浮细胞系在其质体基因组中不携带clpP。我们还讨论了文献中clpP在其他非绿色细胞系和植物中缺失或不表达的几个例子。我们得出结论，clpP并非植物细胞整体存活所必需，而是可能仅对具有活跃基因表达的质体的发育和/或功能至关重要。
