Early Detection and Successful Management of Acute Mesenteric Ischaemia in Symptomatic COVID-19 Patient.

Acute mesenteric ischaemia is a life-threatening vascular emergency that requires early diagnosis and intervention to adequately restore mesenteric blood flow and to prevent bowel necrosis and patient death. Its overall mortality is 60-80% and the reported incidence is increasing. This case report emphasises that a patient with early detection and radiological management of acute mesenteric ischaemia being symptomatic for COVID-19 can avoid major bowel surgery and negate any morbidity or mortality associated with the same.

Transcriptome analysis highlights nuclear control of chloroplast development in the shoot apex.

In dicots, the key developmental process by which immature plastids differentiate into photosynthetically competent chloroplasts commences in the shoot apical meristem (SAM), within the shoot apex. Using laser-capture microdissection and single-cell RNA sequencing methodology, we studied the changes in the transcriptome along the chloroplast developmental pathway in the shoot apex of tomato seedlings. The analysis revealed the presence of transcripts for different chloroplast functions already in the stem cell-containing region of the SAM.

Water-stress induced downsizing of light-harvesting antenna complex protects developing rice seedlings from photo-oxidative damage.

The impact of water-stress on chloroplast development was studied by applying polyethylene glycol 6000 to the roots of 5-day-old etiolated rice (Oryza sativa) seedlings that were subsequently illuminated up to 72 h. Chloroplast development in drought environment led to down-regulation of light-harvesting Chl-proteins. Photosynthetic proteins of Photosystem II (PSII) and oxygen evolving complex i.

Modulation of chlorophyll biosynthesis by water stress in rice seedlings during chloroplast biogenesis.

To understand the impact of water stress on the greening process, water stress was applied to 6-day-old etiolated seedlings of a drought-sensitive cultivar of rice (Oryza sativa), Pusa Basmati-1 by immersing their roots in 40 mm polyethylene glycol (PEG) 6000 (-0.69 MPa) or 50 mm PEG 6000 (-1.03 MPa) dissolved in half-strength Murashige and Skoog (MS)-nutrient-solution, 16 h prior to transfer to cool-white-fluorescent + incandescent light.