Person: RAFIQI, ABDUL MATTEEN
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Publication Metadata only Eco-Evo-Devo: The Time Has Come(2014-01-01T00:00:00Z) Abouheif, Ehab; Fave, Marie-Julie; Ibarraran-Viniegra, Ana Sofia; Lesoway, Maryna P.; Rafiqi, ABDUL MATTEEN; Rajakumar, Rajendhran; RAFIQI, ABDUL MATTEENThe major goal of ecological evolutionary developmental biology, also known as -eco-evo-devo,- is to uncover the rules that underlie the interactions between an organism-s environment, genes, and development and to incorporate these rules into evolutionary theory. In this chapter, we discuss some key and emerging concepts within eco-evo-devo. These concepts show that the environment is a source and inducer of genotypic and phenotypic variation at multiple levels of biological organization, while development acts as a regulator that can mask, release, or create new combinations of variation. Natural selection can subsequently fix this variation, giving rise to novel phenotypes. Combining the approaches of eco-evo-devo and ecological genomics will mutually enrich these fields in a way that will not only enhance our understanding of evolution, but also of the genetic mechanisms underlying the responses of organisms to their natural environments.Publication Metadata only Role of Osmotin in Strawberry Improvement(2012-10-01T00:00:00Z) Husaini, Amjad M.; Rafiqi, ABDUL MATTEEN; RAFIQI, ABDUL MATTEENIn nature, plants are often exposed to multiple biotic and abiotic stresses, severely affecting their growth and development and reducing their productivity. Future predicted adverse climatic changes might threaten the very sustainability of crop production worldwide. Various approaches ought to be explored to deal with the challenges of sustained crop production under such conditions. In this review, we explore the potential of osmotin, a stress-responsive multifunctional pathogenesis-related (PR)-5c protein from tobacco, in improving adaptability of crop plants to climatic changes. As osmotin plays an important role in salt and drought tolerance as well as in cold tolerance and in protecting plants against some fungal pathogens, the relevance of osmotin in improving tolerance to abiotic and biotic stresses in strawberry, a salt-sensitive plant that is also susceptible to several fungal pathogens, is presented herein.Publication Metadata only Megaselia abdita: cuticle preparation from injected embryos.(2011-04-01T00:00:00Z) Rafiqi, ABDUL MATTEEN; Lemke, Steffen; Schmidt-Ott, Urs; RAFIQI, ABDUL MATTEENPublication Metadata only The scuttle fly Megaselia abdita (Phoridae): a link between Drosophila and Mosquito development.(2011-04-01T00:00:00Z) Rafiqi, ABDUL MATTEEN; Lemke, Steffen; Schmidt-Ott, Urs; RAFIQI, ABDUL MATTEENPublication Metadata only BMP-dependent serosa and amnion specification in the scuttle fly Megaselia abdita(2012-09-15T00:00:00Z) Rafiqi, ABDUL MATTEEN; Park, Chee-Hyurng; Kwan, Chun Wai; Lemke, Steffen; Schmidt-Ott, Urs; RAFIQI, ABDUL MATTEENBone morphogenetic protein (BMP) signaling is an essential factor in dorsoventral patterning of animal embryos but how BMP signaling evolved with fundamental changes in dorsoventral tissue differentiation is unclear. Flies experienced an evolutionary reduction of extra-embryonic tissue types from two (amniotic and serosal tissue) to one (amnionserosal tissue). BMP-dependent amnioserosa specification has been studied in Drosophila melanogaster. However, the mechanisms of serosal and amniotic tissue specification in less diverged flies remain unknown. To better understand potential evolutionary links between BMP signaling and extra-embryonic tissue specification, we examined the activity profile and function of BMP signaling in serosa and amnion patterning of the scuttle fly Megaselia abdita (Phoridae) and compared the BMP activity profiles between M. abdita and D. melanogaster. In blastoderm embryos of both species, BMP activity peaked at the dorsal midline. However, at the beginning of gastrulation, peak BMP activity in M. abdita shifted towards prospective amnion tissue. This transition correlated with the first signs of amnion differentiation laterally adjacent to the serosa anlage. Marker-assisted analysis of six BMP signaling components (dpp, gbb, scw, tkv, sax, sog) by RNA interference revealed that both serosa and amnion specification of M. abdita are dependent on BMP activity. Conversely, BMP gain-of-function experiments caused sharpened expression boundaries of extra-embryonic target genes indicative of positive feedback. We propose that changes in the BMP activity profile at the beginning of gastrulation might have contributed to the reduction of extra-embryonic tissue types during the radiation of cyclorrhaphan flies.Publication Metadata only Investigation of the effect of different chelation solutions on penetration of resin‐based and bioceramic sealers with a novel method(2021-01-01T00:00:00Z) Alim, Betül Aycan; Şentürk , Hilal; Kotan, Gözde; Güneşer, Mehmet Burak; Dinçer, Asiye Nur; Rafıqı, Abdul Matteen; UYSAL, BETÜL AYCAN; KOTAN, GÖZDE; GÜNEŞER, MEHMET BURAK; DİNÇER, ASİYE NUR; RAFIQI, ABDUL MATTEENPublication Metadata only Megaselia abdita: culturing and egg collection.(2011-04-01T00:00:00Z) Rafiqi, ABDUL MATTEEN; Lemke, Steffen; Schmidt-Ott, Urs; RAFIQI, ABDUL MATTEENPublication Metadata only Sex combs find middle ground in evolution debate(2014-09-30T00:00:00Z) Abouheif, Ehab; Rafiqi, ABDUL MATTEEN; RAFIQI, ABDUL MATTEENPublication Metadata only Megaselia abdita: fixing and devitellinizing embryos.(2011-04-01T00:00:00Z) Rafiqi, ABDUL MATTEEN; Lemke, Steffen; Schmidt-Ott, Urs; RAFIQI, ABDUL MATTEENPublication Metadata only Postgastrular zen expression is required to develop distinct amniotic and serosal epithelia in the scuttle fly Megaselia(2010-05-01T00:00:00Z) Rafiqi, ABDUL MATTEEN; Lemke, Steffen; Schmidt-Ott, Urs; RAFIQI, ABDUL MATTEENThe amnioserosa is an extraembryonic epithelium that evolved in higher cyclorrhaphan flies from distinct serosal and amniotic epithelia. The underlying genetic mechanism of this evolutionary transition is unknown. Amnioserosa development of Drosophila correlates with novel expression characteristics of the homeobox gene zerknullt (zen), including a broad zen expression domain in the syncytial blastoderm and the complete absence of postgastrular zen expression. Here we examine the functional significance of these features by altering the activity profile of zen in Megaselia (a lower cyclorrhaphan fly with distinct serosal and amniotic epithelia) and Drosophila, and by examining in Megaselia the function of u-shaped group (ush-group) genes, which in Drosophila maintain the amnioserosa after gastrulation when zen is no longer expressed. In Megaselia, loss of postgastrular zen expression abrogates serosa development but allows amnion development. Ectopic expression of zen in early Megaselia embryos allows serosa formation but perturbs amnion development. Megaselia homologues of u-shaped group genes are not essential for serosa formation but mediate germband retraction and dorsal closure. Finally, ectopic postgastrular zen expression in Drosophila causes an enlargement of amnioserosa cells and interferes with the morphogenetic functions of the amnioserosa. Our results suggest that the origin of the amnioserosa involved the loss of postgastrular zen expression from extraembryonic tissue, that the early broad expression domain of Drosophila zen evolved afterwards, and that the ush-group genes ancestrally played a role in morphogenetic functions of the amnion. (C) 2010 Elsevier Inc. All rights reserved.