scholarly journals Role of Tuber Developmental Processes in Response of Potato to High Temperature and Elevated CO2

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 871
Author(s):  
Chien-Teh Chen ◽  
Tim L. Setter

Potato is adapted to cool environments, and there is concern that its performance may be diminished considerably due to global warming and more frequent episodes of heat stress. Our objectives were to determine the response of potato plants to elevated CO2 (700 μmol/mol) and high temperature (35/25 °C) at tuber initiation and tuber bulking, and to elucidate effects on sink developmental processes. Potato plants were grown in controlled environments with treatments at: Tuber initiation (TI), during the first two weeks after initiating short-day photoperiods, and Tuber bulking (TB). At TI, and 25 °C, elevated CO2 increased tuber growth rate, while leaves and stems were not affected. Whole-plant dry matter accumulation rate, was inhibited by high temperature about twice as much at TI than at TB. Elevated CO2 partially ameliorated high temperature inhibition of sink organs. At TI, with 25 °C, elevated CO2 primarily affected tuber cell proliferation. In contrast, tuber cell volume and endoreduplication were unaffected. These findings indicate that the TI stage and cell division is particularly responsive to elevated CO2 and high temperature stress, supporting the view that attention should be paid to the timing of high-temperature stress episodes with respect to this stage.

Plant Biology ◽  
1999 ◽  
Vol 1 (3) ◽  
pp. 365-371 ◽  
Author(s):  
T. Faria ◽  
M. Vaz ◽  
P. Schwanz ◽  
A. PolIe ◽  
J. S. Pereira ◽  
...  

Horticulturae ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. 112
Author(s):  
T. Casey Barickman ◽  
Omolayo J. Olorunwa ◽  
Akanksha Sehgal ◽  
C. Hunt Walne ◽  
K. Raja Reddy ◽  
...  

Recent evidence suggests that the effects of temperature significantly affect the growth and development of basil plants with detrimental impacts on yield. The current research investigated the interactive effects of varying temperature and CO2 levels on the shoot and root morphology and growth of early and late-season basil plants. Basil plants were subjected to control (30/22 °C), low (20/12 °C), and high (38/30 °C) temperature under ambient (420 μL L−1) and elevated (720 μL L−1) CO2 concentrations. Decreasing the temperature to 20/12 °C caused more adverse effects on the morphological traits of the early-season basil. Relative to the control treatments, low- and high-temperature stresses decreased 71 and 14% in marketable fresh mass, respectively. Basil exhibited an increase in plant height, node and branch numbers, specific leaf area, anthocyanin and nitrogen balance index, root tips, and root crossings when subjected to high-temperature stress. Furthermore, elevated CO2 affected many morphological features compared to ambient CO2 concentrations. The findings of this study suggest that varying the growth temperature of basil plants would more significantly impact the shoot and root morphologies and growth rates of basil than increasing the CO2 concentrations, which ameliorated the adverse impacts of temperature stress.


2018 ◽  
Vol 165 (3) ◽  
pp. 569-583 ◽  
Author(s):  
Huan Zhang ◽  
Caizhe Pan ◽  
Shaohan Gu ◽  
Qiaomei Ma ◽  
Yiqing Zhang ◽  
...  

2014 ◽  
Vol 38 (1) ◽  
pp. 61-72 ◽  
Author(s):  
HAIOU DOU ◽  
KUNPENG XV ◽  
QINGWEI MENG ◽  
GANG LI ◽  
XINGHONG YANG

2020 ◽  
Vol 53 (2) ◽  
Author(s):  
Khalil Ahmed Laghari ◽  
Abdul Jabbar Pirzada ◽  
Mahboob Ali Sial ◽  
Muhammad Athar Khan ◽  
Jamal Uddin Mangi

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