Performance Plants featured in The Plant Journal Volume 104, Issue 6, December 2020

Performance Plants

Performance Plants' article and cover photo is featured in The Plant Journal's final issue of 2020. Volume 104, Issue 6, December 2020.

Performance Plants' article on Activation Tagging Identifies Arabidopsis Transcription Factor AtMYB68 for Heat and Drought Tolerance at Yield Determining Reproductive Stages in The Plant Journal's final issue of 2020. 

Article Link: 

For more information on the issue: 

Activation Tagging Identifies ArabidopsisTranscription Factor AtMYB68 for Heat and Drought Tolerance at Yield Determining Reproductive StagesTPJ-00701-2020.R1

Cover Image Caption:

Heatand  drought stresses occurring  at  reproductive  stages oftenresult  in  significant  and  permanent damage  to  crop  yields.However,  there  is  a  significant  gap  in  our  knowledge  on  how  plants  cope  with these stresses at thecritical yield determining stages.  In this issue, Deng et al. (pp. 1535-1550) employeda developmentally  defined,  gain-of-function  genetic  screen  inan  activation  tagged  population of Arabidopsisusing  silique  formation as  the  phenotyping  method  to  reveala R2R3  MYB  transcription factorAtMYB68 for enhancing  heat  and  droughttolerance during  flowering  and  seed  set.Ectopic expression  of AtMYB68in Arabidopsisand  canola  would  enhance  plants’  ability  to  tolerate  single  or simultaneous heat  and  drought  stresses,  resultinginreducedseed  abortion  andbetter  seed  yield.    The regulation of drought tolerance byAtMYB68may be mediated through increasedABA sensitivity, while the heat tolerance is through enhanced pollen viability in the transgenic plants.  The positive gene effects on  stress  tolerance  and  yield  enhancement are  further  supported  by  the  data  from large-scalefield  trials over a wide rangeof geographical regions with various climate conditions.The two panels on the lower right corner of the cover image show the difference insilique formation post heat stress at the regions of the  main  inflorescence betweenthe  non-transgenic  parent  (left)  andthe  homozygous  transgenic  canola line(right).    The  rest  of  the  cover  image  shows  a  typical  full-scale  field  trial  in  which  two  identical trialing blocks  containing  controls  and  transgenic  lines,  situating  in  isolation  among  other  field  crops.  Precise irrigation controlduring growthis managed by acentral pivot irrigation system so that different amount of water can be applied to each of the two planting blocks.