Article
Horticulture
Youyin Zhu, Xianglei Liu, Yudi Gao, Ke Li, Weidong Guo
Summary: The study revealed that the release of cherry flower bud dormancy is closely related to the expression of the AP2/ERF gene family, which is involved in hormone signaling pathways and is upregulated under cold conditions.
SCIENTIA HORTICULTURAE
(2021)
Article
Plant Sciences
Shu Yu, Douglas Amaral, Patrick H. Brown, Louise Ferguson, Li Tian
Summary: This study investigated the physiological and biochemical responses of pistachio buds to increasing durations of winter chill. The degradation of callose and starch, along with the attenuation of ABA biosynthesis, were found to be critical processes driving bud endodormancy break in pistachio.
FRONTIERS IN PLANT SCIENCE
(2023)
Review
Plant Sciences
Steven Penfield, Samuel Warner, Laura Wilkinson
Summary: Temperate plants universally respond to prolonged winter chilling by using seasonal temperature cues to align development with the earth's orbit, but climate change is reducing reliable winter chill and impacting cultivation of temperate crops in subtropical areas. This study explores the molecular aspects of plant responses to winter chill, including seasonal bud break and flowering, and how variations in winter chill intensity or devernalization can affect post-chilling plant development and crop yield structures.
JOURNAL OF EXPERIMENTAL BOTANY
(2021)
Article
Biochemistry & Molecular Biology
Zhi-Zhen Fang, Kui Lin-Wang, He Dai, Dan-Rong Zhou, Cui-Cui Jiang, Richard V. Espley, Cecilia Deng, Yan-Juan Lin, Shao-Lin Pan, Xin-Fu Ye
Summary: This study reports the genome sequence of Chinese plum Sanyueli, which has a low-chill requirement for flower bud break. The genome sequence provides valuable information for understanding the molecular mechanisms involved in chilling requirements, and it also contributes to the identification of genes associated with important agronomic traits and molecular breeding in plum.
MOLECULAR ECOLOGY RESOURCES
(2022)
Article
Forestry
Noemie Vimont, Adrian Schwarzenberg, Mirela Domijan, Armel S. L. Donkpegan, Remi Beauvieux, Loick le Dantec, Mustapha Arkoun, Frank Jamois, Jean-Claude Yvin, Philip A. Wigge, Elisabeth Dirlewanger, Sandra Cortijo, Benedicte Wenden
Summary: It has been shown that hormones play a key role in the establishment, maintenance, and release of bud dormancy in temperate trees. The ABA pathway plays a central role in controlling dormancy progression.
Article
Plant Sciences
Monica Canton, Cristian Forestan, Gianpiero Marconi, Esther Carrera, Claudio Bonghi, Serena Varotto
Summary: In temperate zones, fruit trees adjust their annual growth cycle to seasonal changes. Chilling accumulation allows peach flower bud development to be completed, accompanied by changes in transcription, epigenetic modifications, and chromatin structure.
Article
Horticulture
Zhuang Wen, Xuejiao Cao, Qiandong Hou, Xiaowei Cai, Yi Hong, Kun Yang, Guang Qiao, Xiaopeng Wen
Summary: This study investigated the role of TCP genes in regulating flower bud dormancy in sweet cherry and found that PavTCP17 gene is significantly correlated with hormone synthesis and related gene expression. Transgenic Arabidopsis overexpressing PavTCP17 showed reduced main branches and inhibited lateral bud outgrowth, indicating the promotion of bud dormancy. Moreover, PavTCP17 was found to directly bind to the PavNCED3 promoter, suggesting its involvement in promoting ABA synthesis.
SCIENTIA HORTICULTURAE
(2023)
Article
Plant Sciences
Yafan Li, Qi Xin, Yingjie Zhang, Meixia Liang, Gang Zhao, Daqi Jiang, Xiaohua Liu, Hongxia Zhang
Summary: This study investigated the correlation between dormancy release and metabolic changes in lily bulbs during low temperature storage. Low temperature was found to be a major environmental factor for dormancy release in lily bulbs. By comparing two different dormant lily cultivars, it was found that low temperature promoted stem elongation, floral transition, and flowering, while room temperature restricted stalk elongation and prevented floral transition and flowering. The less dormant cultivar exhibited higher antioxidant enzyme activity and total primary metabolite contents in the apical bud. Gene expression analysis showed changes in gene expression in the apical bud of the more dormant cultivar under room temperature storage condition. These findings revealed the close association between the growth and dormancy breaking of lily bulbs and the metabolic changes in the apical buds.
PLANT CELL REPORTS
(2022)
Article
Horticulture
Javier C. Fragoso-Jimenez, Jaime Silva-Morales, Rodrigo Barba-Gonzalez, Ma Claudia Castaneda-Saucedo, Ernesto Tapia-Campos
Summary: The research evaluated the flowering time of tuberose and found that storage time and temperature have an impact on it, but not on the growth of the meristem.
SCIENTIA HORTICULTURAE
(2021)
Article
Plant Sciences
Yongqiang Li, Shuang An, Qiangqiang Cheng, Yu Zong, Wenrong Chen, Weidong Guo, Lu Zhang
Summary: This study systematically investigated the TCP gene family in blueberries, revealing their versatile functions in plant growth, development, and response to environmental stress. It was discovered that VcTCP18 negatively regulates bud dormancy release in blueberries. Transgenic experiments demonstrated that overexpression of VcTCP18 significantly decreased seed germination rate and led to late flowering, fewer rosettes, and main branches in plants.
FRONTIERS IN PLANT SCIENCE
(2021)
Review
Horticulture
Abdel-Moety Salama, Ahmed Ezzat, Hassan El-Ramady, Shamel M. Alam-Eldein, Sameh K. Okba, Hayam M. Elmenofy, Islam F. Hassan, Attila Illes, Imre J. Holb
Summary: Adequate chill is crucial for deciduous fruit trees, but temperate fruit trees in warm winter regions face challenges with dormancy and chilling requirements under climate change. The review discusses the effects of climate change on these parameters and the development of models to improve adaptation in tropical and subtropical environments.
Article
Forestry
Soichiro Nishiyama, Miwako Cecile Matsushita, Hisayo Yamane, Chikako Honda, Kazuma Okada, Yosuke Tamada, Shigeki Moriya, Ryutaro Tao
Summary: MdFLC-like gene in apple is associated with cold exposure and flower development, with its overexpression affecting plant growth rather than flowering in Arabidopsis. Seasonal expression patterns of MdFLC-like show earlier upregulation in 'Anna' compared to 'Fuji' and 'Tsugaru', potentially linked to genotype-dependent chilling requirements.
Article
Biochemistry & Molecular Biology
Jiyuan Wang, Xunju Liu, Wanxia Sun, Yan Xu, Irfan Ali Sabir, Muhammad Abdullah, Shiping Wang, Songtao Jiu, Caixi Zhang
Summary: The study identified two cold-induced genes in sweet cherry which play a key role in flower development during dormancy, revealing their molecular mechanisms in response to light, temperature and ABA. This sheds light on the regulatory pathways involved in flowering time control and dormancy release in fruit species, particularly sweet cherry.
Article
Forestry
Camilo Chiang, Marcos Viejo, Oda Toresdatter Aas, Katharina T. Hobrak, Christian Bianchi Stromme, Inger Sundheim Floistad, Jorunn E. Olsen
Summary: Light and temperature play critical roles in the annual growth rhythm of tree seedlings. This study found that increasing temperature under extended red light delayed/prevented bud set and resulted in faster bud burst, indicating less deep dormancy compared to lower temperatures. Additionally, sustained shoot elongation under blue light treatment demonstrated an irradiance-dependent effect of day extension with blue light.
Review
Plant Sciences
Akiyoshi Tominaga, Akiko Ito, Toshihiko Sugiura, Hisayo Yamane
Summary: Recent climate change has led to warmer temperatures, negatively impacting dormancy progression, cold (de)acclimation, and cold tolerance in temperate fruit trees. This has resulted in a physiological disorder known as flowering disorder, particularly in Japanese pear trees. The risk of flowering disorder occurrence is higher in warmer years and at lower latitudes. Changes in the transcript levels of dormancy/flowering regulators are linked to the susceptibility to flowering disorder. Warm temperatures during autumn and winter affect cold acclimation, dormancy progression, and floral bud maturation, leading to reduced tree vigor and the occurrence of flowering disorder.
FRONTIERS IN PLANT SCIENCE
(2022)