e-journal

Anhydrobiosis and programmed cell death in plants: Commonalitiesand Differences

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tAnhydrobiosis is an adaptive strategy of certain organisms or specialised propagules to survive in theabsence of water while programmed cell death (PCD) is a finely tuned cellular process of the selectiveelimination of targeted cell during developmental programme and perturbed biotic and abiotic condi-tions. Particularly during water stress both the strategies serve single purpose i.e., survival indicatingPCD may also function as an adaptive process under certain conditions. During stress conditions PCDcause targeted cells death in order to keep the homeostatic balance required for the organism survival,whereas anhydrobiosis suspends cellular metabolic functions mimicking a state similar to death untilreestablishment of the favourable conditions. Anhydrobiosis is commonly observed among organismsthat have ability to revive their metabolism on rehydration after removal of all or almost all cellular waterwithout damage. This feature is widely represented in terrestrial cyanobacteria and bryophytes whereit is very common in both vegetative and reproductive stages of life-cycle. In the course of evolution,with the development of advanced vascular system in higher plants, anhydrobiosis was gradually lostfrom the vegetative phase of life-cycle. Though it is retained in resurrection plants that primarily belongto thallophytes and a small group of vascular angiosperm, it can be mostly found restricted in orthodoxseeds of higher plants. On the contrary, PCD is a common process in all eukaryotes from unicellular tomulticellular organisms including higher plants and mammals. In this review we discuss physiologicaland biochemical commonalities and differences between anhydrobiosis and PCD.

Keywords:AnhydrobiosisDesiccationROSPCDTrehalosePolyaminesABALEA proteinsa

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Informasi Detail

Judul Seri

Current Plant Biology

No. Panggil

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Penerbit

: Elsevier., 2015

Deskripsi Fisik

Current Plant Biology 2 (2015) 12–20

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

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