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Overcoming Challenges for Shoot Tip Cryopreservation of Root and Tuber Crops

文献类型： 外文期刊

作者： Zhang, A-Ling 1 ; Wang, Min-Rui 1 ; Li, Zhiying 1 ; Panis, Bart 4 ; Bettoni, Jean Carlos 6 ; Vollmer, Rainer 7 ; Xu, Li 1 ; Wang, Qiao-Chun 3 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Crop Genet Resources, Danzhou 571737, Peoples R China

2.Natl Gene Bank Trop Crops, Key Lab Trop Crops Germplasm Resources Genet Impro, Danzhou 571737, Peoples R China

3.Northwest A&F Univ, Coll Hort, State Key Lab Crop Stress Biol Arid Reg, Xianyang 712100, Peoples R China

4.Katholieke Univ Leuven, Alliance Biovers Int & CIAT, Willem Croylaan 42,POB 2455, B-3001 Leuven, Belgium

5.Katholieke Univ Leuven, Dept Biosyst, Willem Croylaan 42,POB 2455, B-3001 Leuven, Belgium

6.New Zealand Inst Plant & Food Res Ltd, Batchelar Rd, Palmerston North 4410, New Zealand

7.Cryobank, Int Potato Ctr CIP, Av La Molina 1895, Lima 15024, Peru

关键词： cassava; cryopreservation; long-term storage; potato; root and tuber crop; shoot tips; sweet potato; taro

期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）

ISSN：

年卷期： 2023 年 13 卷 1 期

页码：

收录情况： SCI

摘要： Root and tuber crops (RTCs) are the second-most important carbohydrate commodity after cereals. Many species of the RTCs are vegetatively propagated, making their shoot tips the preferred material to be conserved for future uses. Shoot tip cryopreservation provides an important tool to support the long-term conservation of plant genetic resources. Over the past four decades, significant efforts have been undertaken to move shoot tip cryopreservation of RTCs from research projects to full-scale implementation in cryobanks. This comprehensive review focuses on the history of cryopreservation protocols developed in RTCs. The encapsulation and vitrification solution-based cryopreservation techniques followed by ultra-rapid freezing and thawing have been highly successful. Additionally, different strategies for improving the cryotolerance of shoot tips have been introduced to further increase post-cryopreservation recovery. Finally, the research conducted to explain the mechanism underlying cryoprotection and differential cryotolerance including the use of histological studies are highlighted.

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