Author(s): Lieven De Veylder [1]; T

Author(s): Lieven De Veylder [1]; Tom Beeckman [1]; Dirk Inzé (corresponding author) [1]

As in all eukaryotes, cell division in plants is controlled by an intricate mechanism that involves cyclin-dependent kinases (CDKs) as key regulators ([Box 1]; see Ref. 1 for a review). Numerous components control the activity of these kinases, resulting in a complex molecular network that still holds some secrets even though it is 30 years since the initial discovery of CDKs in yeast. The overarching architecture of the network that controls the cell cycle seems to be largely conserved between animals and plants. This conservation is surprising because plants have evolved some unique features. Not only do plants use specialized microtubular arrays to construct new cell walls within the rigid cellular constraints of the mother cell [2], they also generate new organs during their complete life span, allowing some plant species to grow for thousands of years. Furthermore, complete new plants can be generated from single cells, granting most plant cells with the status of totipotency.

Recently, some excellent reviews have been written on the integration of cell division with plant development [3, 4, 5]. Here, we discuss how plant cells enter and exit the cell cycle. First, we review how quiescent cells reactivate their cell cycle and how asymmetric cell divisions are involved in the generation of new tissues and organs, such as lateral roots. Second, we provide insights into how plant cells exit the cell cycle following developmental signals that cause differentiation, and how the cell cycle is arrested in response to unfavourable environmental conditions.

Hasil (Bahasa Indonesia) 1:

Penulis: Lieven De Veylder [1]; Tom Beeckman [1]; Dirk Inzé (sesuai penulis) [1]Seperti semua bersel satu pembelahan sel pada tanaman dikendalikan oleh mekanisme yang rumit yang melibatkan kinase bergantung siklin (CDKs) sebagai kunci regulator ([kotak 1]; Lihat Ref. 1 untuk review). Berbagai komponen kontrol aktivitas siklin ini, mengakibatkan jaringan molekul kompleks yang masih memegang beberapa rahasia meskipun sudah 30 tahun sejak penemuan awal CDKs pada ragi. Menyeluruh arsitektur jaringan yang mengendalikan siklus sel tampaknya sebagian besar dilestarikan antara hewan dan tanaman. Pelestarian ini mengejutkan karena tanaman telah berevolusi beberapa fitur unik. Tidak hanya Apakah tanaman menggunakan array microtubular khusus untuk membangun dinding sel baru dalam batasan-batasan selular kaku sel induk [2], mereka juga menghasilkan organ baru selama rentang hidup mereka lengkap, memungkinkan beberapa spesies tanaman untuk tumbuh selama ribuan tahun. Selain itu, tanaman baru lengkap dapat dihasilkan dari sel tunggal, pemberian kebanyakan sel-sel tanaman dengan status totipotency.Recently, some excellent reviews have been written on the integration of cell division with plant development [3, 4, 5]. Here, we discuss how plant cells enter and exit the cell cycle. First, we review how quiescent cells reactivate their cell cycle and how asymmetric cell divisions are involved in the generation of new tissues and organs, such as lateral roots. Second, we provide insights into how plant cells exit the cell cycle following developmental signals that cause differentiation, and how the cell cycle is arrested in response to unfavourable environmental conditions.