Struggling Sakshi Malik suffered a humiliating quarterfinal defeat while Ritu Phogat also faded at the same stage but the two wrestlers still have a chance to reach the bronze medal play-off at the World Championship after receiving repechage rounds, here Wednesday.While established stars struggled, young Ritu Malik fought well but bowed out after losing her bronze medal match 3-7 to 2017 U-23 world champion and this year’s World Cup gold medal winner Ayana Gempei from Japan in the 65kg.Ritu Malik did her best but lack of experience at big stage affected her performance. She had edged out Bulgaria’s Sofiya Hristova Georgieva 9-8 in the repechage round despite lagging behind twice in an exciting bout.She trailed 0-3 after the first period but a four-point throw in the second period and a step out-point pushed her ahead 5-3.However, the confident Bulgarian reduced the deficit to one point soon. Ritu Malik again found a four-point move to zoom to a 9-6 lead. Sofiya kept Ritu Malik under pressure but the Indian grappler just about managed to maintain her lead to progress to the medal round.There was yet another disappointment in store for Olympic medallist Sakshi, who was outclassed 2-16 by Japan’s Yukako Kawai, a two time World Cup gold winner in the 62kg category.Sakshi lost a point for passivity but took the break with a 2-1 lead after a takedown move.However, in the second period, the Japanese inflicted a humiliation on the Indian. Yukako took three points with a leg-hold move and consolidated the lead with a take down. She followed it up with ‘fitley’, rolling Sakshi four times to log eight points.advertisementSakshi had endured a below-par show at the Commonwealth Games, where she won a bronze in a weak field and failed to reach the medal round at the Jakarta Asian Games.She will now fight it out with either Aminat Oluwafumilayo Adeniyi or Marianna Sastin in the repechage round.In the 50kg category, Ritu Phogat, who replaced her injured cousin Vinesh Phogat, made a stupendous start by winning the pre-quarterfinal against Thi Yuan Nguyen by technical superiority but lost the quarter-final by fall to Yui Susaki, the 2017 world champion in 48kg category.Since Susaki made the final, Ritu Phogat got the repechage round against Romania’s Emila Alina Vuc.CWG silver medallist Pooja Dhanda lost 3-4 to China’s Ningning Rong at the same stage in the 57kg but she is still alive and will take on Azerbaijan’s Alyona Kolesnik.However, it was all over for Pinki (53kg), who lost her quarterfinal to Poland’s Katarzyna Krawczyk 2-7.
Brittle stars are included within a whole range of species, which contribute to knowledge in the medically important area of tissue regeneration. All brittle stars regenerate lose limbs, but the rate at which this occurs is highly variable and species-specific. One of the slowest rates of arm regeneration reported so far is that of the Antarctic Ophionotus victoriae. Additionally, O. victoriae also has an unusual delay in the onset of regeneration of about 5 months. Both processes are of interest for the areas of regeneration biology and adaptation to cold environments. One method of understanding the details of regeneration events in brittle stars is to characterise the genes involved. In the largest transcriptome study of any ophiuroid to date, we describe the results of mRNA pyrosequencing from pooled samples of regenerating arms of O. victoriae. The sequencing reads resulted in 18,000 assembled contiguous sequences of which 19% were putatively annotated by blast sequence similarity searching. We focus on the identification of major gene families and pathways with potential relevance to the regenerative processes including the Wnt/β-catenin pathway, Hox genes, the SOX gene family and the TGF beta signalling pathways. These data significantly increase the amount of ophiuroid sequences publicly available and provide candidate transcripts for the further investigation of the unusual regenerative process in this Antarctic ophiuroid.