Abiotic stress responses in shoot apical meristem
​

                       SHOOTMERISTEMLESS (STM) signaling networks and meristem development

Picture
I have developed integrated transcriptional networks on meristem development and stress signaling pathways in Arabidopsis thaliana. However, it is important to understand how genotype and phenotype correlate for meristem development in accordance to the environmental cues. My lab will combine genomic, genetics, and systems biology approaches to link meristem and stress-associated traits to the gene regulatory networks that control them.

Nidhi Sharma, Jesus Preciado, Tie Liu. (2021) KNOX HOMOLOGS SHOOT MERISTEMLESS (STM) and KNAT6 are epistatic to CLAVATA3 (CLV3) during embryonic meristem development in Arabidopsis thaliana. Molecular Biology Reports. 48(9):6291-6302. doi: 10.1007/s11033-021-066224

Jesus Preciado, Kevin Begcy, Liu T. (2021) The Arabidopsis ABIG1 is an Adaxial Regulator During Leaf Development. Journal of Experimental Botany. DOI: 10.1093/jxb/erab523

Liu T, Longhurst A, Talavera-Rauh F, Hokin S, and Barton MK. (2016) The Arabidopsis transcriptionalrepressor ABIG1 relays ABA signaled inhibition of growth and drought induced senescence. eLife. 5,e13768.

                                   Postharvest senescence in vegetables 

                                   Postharvest senescence in broccoli  (Brassica oleracea)

The cultivated Brassica species, which are the group of crops most closely related to Arabidopsis.  Previous comparative research between Brassica oleracea and Arabidopsis thaliana genome identified numerous one-to-one segmental relationships and genome duplications. However, little is known about the molecular mechanism of postharvest senescence in broccoli. My lab will focus on identifying genes that are involved in postharvest senescence in Brassica oleracea and the other Brassica species .
Yogesh Ahlawat,  Tie Liu (2020) Varied expression of senescence-associated and ethylene-related genes during postharvest storage of Brassica vegetables. Int. J. Mol. Sci. 2021, 22(2), 839; https://doi.org/10.3390/ijms22020839.
 
Yogesh Ahlawat, Song Li, Eleni D. Pliakoni, Jeffrey Brecht, and Tie Liu. (2022) Identifying gene regulatory networks of senescence in postharvest broccoli (Brassica oleracea). Postharvest Biology and Technology. 183, 111729. https://authors.elsevier.com/sd/article/S0925-5214(21)00268-4.
https://biorxiv.org/cgi/content/short/2021.02.18.431815v1
​Xiaolei Guo, Yogesh Ahlawat,  Alina Zare, Tie Liu (2021) Evaluation of Postharvest Senescence in Broccoli Via Hyperspectral Imaging. https://www.biorxiv.org/content/10.1101/2020.12.16.423030v1

                                                   Fruit ripening and decay                                                      

                                                     Muscadine grape ripening 

Picture
The gene regulatory networks in muscadine grape ripening 

                                        Chilling injury in tropical and subtropical fruit

The mechanisms of chilling injury in tropical and subtropical plants

                        Cell wall changes and softening in small fruits after harvest

We are interested in understanding the molecular mechanisms of cell wall changes during fruit ripening and how cell wall breakdown causes postharvest fruit softening in blueberry 


​.