Starzenie się nasion – złożony problem banków genów. Praca przeglądowa
MAJA BOCZKOWSKA
Polska Akademia Nauk Ogród Botaniczny – Centrum Zachowania Różnorodności Biologicznej, Prawdziwka 2, 02-973 Warszawa, Krajowe Centrum Roślinnych Zasobów Genowych, Instytut Hodowli i Aklimatyzacji Roślin – Państwowy Instytut Badawczy, Radzików, 05-870 Błonie, PolskaANNA RUCIŃSKA
Polska Akademia Nauk Ogród Botaniczny – Centrum Zachowania Różnorodności Biologicznej, Prawdziwka 2, 02-973 Warszawa, PolskaMAŁGORZATA TARGOŃSKA-KARASEK
Polska Akademia Nauk Ogród Botaniczny – Centrum Zachowania Różnorodności Biologicznej, Prawdziwka 2, 02-973 Warszawa, PolskaMARCIN OLSZAK
Polska Akademia Nauk Ogród Botaniczny – Centrum Zachowania Różnorodności Biologicznej, Prawdziwka 2, 02-973 Warszawa, PolskaMACIEJ NIEDZIELSKI
Polska Akademia Nauk Ogród Botaniczny – Centrum Zachowania Różnorodności Biologicznej, Prawdziwka 2, 02-973 Warszawa, PolskaMONIKA RAKOCZY-TROJANOWSKA
Katedra Genetyki, Hodowli i Biotechnologii Roślin, Wydział Ogrodnictwa, Biotechnologii i Architektury Krajobrazu, Szkoła Główna Gospodarstwa Wiejskiego w Warszawie, ul. Nowoursynowska 159, 02-776 Warszawa, PolskaAbstrakt
Starzenie prowadzące do śmierci jest procesem uniwersalnym dotyczącym wszystkich żywych organizmów bez względu na stopień ich złożoności. Długość życia, warunkowana tempem zachodzenia procesów starzenia, jest bardzo zróżnicowana, a rośliny wykazują największy zakres jej zmienności. Procesy starzenia dotyczą również nasion zgromadzonych w przechowalniach długoterminowych banków genów. Zachowanie żywotnych nasion ma zasadnicze znaczenie dla ochrony różnorodności biologicznej, która jest skutecznie i systematycznie niszczona. Dotychczasowe badania nad starzeniem się nasion dotyczyły m.in. wyciszenia metabolizmu, powstawania reaktywnych form tlenu i efektów, jakie ich obecność wywołuje, uszkodzeń biomolekuł, metylacji DNA, a ostatnio także małych niekodujących cząsteczek RNA. Celem pracy jest przybliżenie złożonego, wielopoziomowego procesu, który zachodzi w nasionach w trakcie długotrwałego przechowywania.
Słowa kluczowe:
starzenie się nasion, zasoby genowe, metabolizm, uszkodzenia biomolekuł, reaktywne formy tlenu, zmiany epigenetyczneBibliografia
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Polska Akademia Nauk Ogród Botaniczny – Centrum Zachowania Różnorodności Biologicznej, Prawdziwka 2, 02-973 Warszawa, Krajowe Centrum Roślinnych Zasobów Genowych, Instytut Hodowli i Aklimatyzacji Roślin – Państwowy Instytut Badawczy, Radzików, 05-870 Błonie, Polska
Polska Akademia Nauk Ogród Botaniczny – Centrum Zachowania Różnorodności Biologicznej, Prawdziwka 2, 02-973 Warszawa, Polska
Polska Akademia Nauk Ogród Botaniczny – Centrum Zachowania Różnorodności Biologicznej, Prawdziwka 2, 02-973 Warszawa, Polska
Polska Akademia Nauk Ogród Botaniczny – Centrum Zachowania Różnorodności Biologicznej, Prawdziwka 2, 02-973 Warszawa, Polska
Polska Akademia Nauk Ogród Botaniczny – Centrum Zachowania Różnorodności Biologicznej, Prawdziwka 2, 02-973 Warszawa, Polska
Katedra Genetyki, Hodowli i Biotechnologii Roślin, Wydział Ogrodnictwa, Biotechnologii i Architektury Krajobrazu, Szkoła Główna Gospodarstwa Wiejskiego w Warszawie, ul. Nowoursynowska 159, 02-776 Warszawa, Polska
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