Kufamba kwezvirimwa kwagara kuchifadza vatsvakurudzi vakawanda. Legumes iboka rezvirimwa zvine mukurumbira nekuratidza mafambiro akasiyana-siyana emashizha, kusanganisira "nyctinastic movement," umo mashizha anovhurika masikati uye anovhara usiku. Kufamba kwechirimwa kwakafanana kunosanganisira bhuruu-chiedza-induced uye kubata-sensitive mafambiro, senge muzvinomera zvinobata seMimosa pudica.
Kufamba mumashizha emashizha kunokonzerwa nekudzokororwa uye kudzorerwa ekisitenjeni uye kuputika kwe motokari Masero, ari masero ari muchimiro chinonzi pulvinus pazasi pemashizha uye petioles. Kudzokororwa kwakadaro uye kudzoreredzwa kwesero kuwedzera uye kuputika hazviwanzo mumasero ezvirimwa, ayo akakomberedzwa neyakaomarara. rusero rusvingo. Uyezve, hazvinzwisiswe zvakanaka kuti masero emota anokwanisa sei kudzokorora uye kudzoreredza kuwedzera uye kudonha.
Kudyara maseru madziro anoumbwa akati wandei cellulose microfibrils inodzikira kana kuwedzera mukupindura kune osmotic concentration misiyano pakati pemukati nekunze kwesero. Nekudaro, huwandu hwekuchinja hunogona kukonzereswa neanisotropy mukurongeka kwe cellulose microfibrils haigone kutsanangura huwandu hwakazara hwe. mufambo ye pulvinus.
Chikwata chekutsvagisa chinotungamirwa naMiyuki Nakata naTaku Demura kuNara Institute of Science and Technology (NAIST) yakaongorora zvikamu zvakachinjika zvepulvinar mota maseru kubva kuDesmodium paniculatum vachishandisa confocal laser microscopy kuongorora magadzirirwo ekudzokorora uye kudzoreredzwa kwesero kuwedzera uye kudhonzwa. Ivo vakacherekedza yakasarudzika circumferential "slits" musero madziro emota maseru aive neshoma cellulose. Zvivako izvi zvakachengetedzwa mukati memhuri mbiri dze legumes, kusanganisira soya beans, kudzu uye zvinomera zvinomera.
Pakufambisa matishu kubva ku legume cortical mota masero kune mhinduro dzeakasiyana osmolarity, iyo pulvinar slits yakawedzera muhupamhi, zvichiratidza nzira inoshandiswa nayo. chirimwa masero maseru inogona kushanduka mukupindura mhinduro dzeakasiyana osmolarity.
Kuburikidza nemusanganiswa weakadzama cell wall analysis, kutevedzera komputa, uye kucherechedzwa kwema pulvinar slits mumasero ari kuwedzera uye kuputika, pulvinar slits yakatsunga kuva mechanically flexible zvivako zvinovhura uye kuvhara panguva yekuwedzera kwesero uye kuputika.
"Computer modelling yakaratidza kuti pulvinar slits ifambise kuwedzera anisotropic munzira yakatarisana neiyo slits pamberi pe turgor pressure," anodaro Miyuki Nakata. Vatsvakurudzi vakafananidza chiito nekucheka zvakananga kana slits inoshandiswa mukirigami, mapepa eJapan, kuwedzera kuwedzera kwepepa repepa.
Nekudaro, timu yekutsvagisa yakaronga kuti aya akasiyana, pulvinar slits zvimiro zvinoita kuti zvibvumire kufamba kwakawanda kwema cortical mota masero pane zvingave zvichitenderwa neyakajairwa cellulose microfibrils musero madziro.
"Isu tinopa fungidziro yekuti pulvinar slits ine basa mukufamba kwemashizha kuburikidza nekudzokorora uye kudzoreredza deformation ye cortical mota maseru mukoniti nezvimwe zvinhu zvinosanganisira cellulose orientation, pectin-rich kuumbwa kwesero madziro, geometry yecortical mota masero, uye the actin cytoskeleton,” anodaro Miyuki Nakata.
Chidzidzo chinobudiswa mumagazini Dyara Physiology.