Motsin tsire-tsire ya daɗe yana burge masu bincike da yawa. Legumes rukuni ne na shuke-shuke da suka shahara don nuna motsin ganye daban-daban, ciki har da " motsi na nyctinastic," wanda ganyen ya buɗe da rana kuma yana rufe da dare. Irin wannan motsi na shuka ya haɗa da motsi mai haske mai shuɗi da taɓawa, kamar a cikin tsire-tsire masu mahimmanci kamar Mimosa pudica.
Motsi a cikin tsarin ganye yana faruwa ta maimaitawa da maimaituwa tsawo da ƙanƙancewa na Mota Kwayoyin, waxanda suke sel a cikin tsarin da ake kira pulvinus a gindin leaflets da petioles. Irin wannan maimaitawa da sake juyawa tantanin halitta da raguwa suna da wuya sosai a cikin sel na shuka, waɗanda ke kewaye da tauri. bangon tantanin halitta. Bugu da ƙari, ba a fahimci yadda ƙwayoyin motsi ke da ikon maimaitawa da sake dawowa da haɓakawa ba.
Ganuwar tantanin halitta sun ƙunshi adadin microfibrils cellulose waɗanda ke raguwa ko faɗaɗa don amsa bambance-bambancen taro na osmotic tsakanin ciki da waje na tantanin halitta. Duk da haka, adadin canjin da za a iya haifar da anisotropy a cikin tsari na microfibrils cellulose ba zai iya bayyana cikakken kewayon motsi na pulvinus.
Tawagar bincike karkashin jagorancin Miyuki Nakata da Taku Demura a Cibiyar Kimiyya da Fasaha ta Nara (NAIST) sun yi nazarin sassan sassan sel na pulvinar daga Desmodium paniculatum ta amfani da microscopy na laser confocal don bincikar tsarin maimaitawa da sake dawowa da haɓakar ƙwayoyin cuta. Sun gano keɓaɓɓen “tsage” a cikin bangon tantanin halitta na ƙwayoyin motsi waɗanda ke ɗauke da ƙarancin cellulose. An adana tsarin a tsakanin dangi biyu na legumes, gami da waken soya, kudzu da tsire-tsire masu hankali.
Bayan canja wurin yankan nama daga sel cortical moto na legume zuwa mafita na osmolarity daban-daban, ɓangarorin pulvinar sun ƙaru da faɗi, yana nuna hanyar da ta ganuwar tantanin halitta zai iya jujjuyawa don mayar da martani na osmolarity daban-daban.
Ta hanyar haɗe-haɗe da cikakken nazarin bangon tantanin halitta. kwaikwayo na kwamfuta, da kuma lura da ɓangarorin pulvinar a cikin sel waɗanda ke jurewa da haɓakawa, an ƙaddara tsagewar pulvinar su zama sifofi masu sassauƙa na inji waɗanda ke buɗewa da rufewa yayin haɓakar tantanin halitta da raguwa.
"Tsarin kwamfyuta ya nuna cewa slits na pulvinar yana sauƙaƙe haɓakar anisotropic a cikin al'amuran daidai gwargwado a gaban matsin turgor," in ji Miyuki Nakata. Masu binciken sun kwatanta aikin da madaidaicin yanke ko tsaga da aka yi amfani da su a cikin kirigami, kayan aikin Jafananci, don haɓaka haɓakar takardar takarda.
Don haka, ƙungiyar binciken ta ba da shawarar cewa waɗannan na musamman, slits na pulvinar su ne sifofi waɗanda ke yin aiki don ba da damar ƙarin motsi na ƙwayoyin motsi na cortical fiye da yadda microfibrils cellulose na yau da kullun ke ba da izini a bangon tantanin halitta.
"Muna ba da hasashe cewa tsagewar pulvinar suna da rawar gani a cikin motsin ganye ta hanyar maimaitawa da sake jujjuyawar nakasar sel masu motsi na cortical tare da wasu abubuwan ciki har da daidaitawar cellulose, abun da ke da wadataccen pectin na bangon tantanin halitta, lissafi na sel masu motsi na cortical, da da maganin cytoskeleton,” in ji Miyuki Nakata.
An buga wannan binciken a mujallar Shuka Physiology.