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Rapid injuries of high temperature in plants
Gurpreet Kaur Goraya,Balraj Kaur,Bavita Asthir,Shashi Bala,Gurpreet Kaur Goraya,Muhammad Farooq 한국식물학회 2017 Journal of Plant Biology Vol.60 No.4
Global climate changes particularly high temperature is predicted to have a general negative effect on plant growth and development, that might lead to catastrophic loss of crop productivity. High temperature has a wide range of effect on plant in terms of plant physiological, biochemical processes such as photosynthesis, respiration water relations, and gene regulatory pathways. The injury inflicted on plant tissues under such extremes weakens the cell membrane, which leads to the production of reactive oxygen species that attacks major sites i.e photosynthetic apparatus, the photosystems, mainly photosystem II (PSII) and the respiratory pathways. To cope with rising temperature conditions, plants possess a number of adaptive, avoidance, or acclimation mechanisms. In addition to major tolerance mechanisms, plants also employ ion transporters, proteins, osmoprotectants, antioxidants and many other factors involved in signaling cascades and transcriptional control that are activated to offset stress-induced biochemical and physiological alterations. This article reviews the recent findings on high temperature induced injuries and responses at the cellular, organellar and whole plant levels.
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Acute Intestinal Ischemia in a Patient with COVID-19 Infection
( Balraj Singh ),( Ashesha Mechineni ),( Parminder Kaur ),( Nora Ajdir ),( Michael Maroules ),( Fayez Shamoon ),( Mahesh Bikkina ) 대한소화기학회 2020 대한소화기학회지 Vol.76 No.3
The World Health Organization has declared novel coronavirus disease 2019 (COVID-19) a global public health emergency. Although respiratory symptoms predominate in COVID-19, thrombosis can occur in patients with COVID-19. This paper reports a case of an 82-year-old female with a prior medical history of hypertension, diabetes presenting with fever and cough, and was diagnosed with COVID-19. The patient subsequently developed progressively worsening of abdominal distention, tenderness, and underwent emergent laparotomy. She was found to have a gangrenous colon. This case adds to the limited literature regarding the extrapulmonary complications of COVID-19. (Korean J Gastroenterol 2020;76:164-166)
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