RA5 PAPER: Impacts of rapid desiccation on ...

Impacts of Rapid Desiccation on Oxidative Status, Ultrastructure and Physiological Functions of Syzygium maire (Myrtaceae) Zygotic Embryos in Preparation for Cryopreservation

April 2022

van der Walt K, Burritt DJ, Nadarajan J. 2022. Impacts of Rapid Desiccation on Oxidative Status, Ultrastructure and Physiological Functions of Syzygium maire (Myrtaceae) Zygotic Embryos in Preparation for Cryopreservation. Plants 11(8): 1056.

ABSTRACT

Syzygium maire is a highly threatened Myrtaceae tree species endemic to New Zealand. Due to its recalcitrant seed storage behaviour, cryopreservation is the only viable long-term ex situ conservation option for this species. This study investigated viability, oxidative stress, thermal properties, and ultrastructure of zygotic embryo axes (EAs) desiccated to various moisture contents (MC).

KEYWORDS

critically endangered; differential scanning calorimetry; recalcitrant; ROS; TEM; thermal transitions; threatened