Zvirimwa zvekurima zvinowanzosangana nemamiriro ekunze akaomarara. Panzvimbo pekushandisa simba mukukura, zvinhu zvakaita sehosha, tembiricha yakanyanyisa uye ivhu rine munyu zvinomanikidza zvirimwa kuti zvizvishandise kupindura kune zvinokonzeresa kushushikana. Ichi chiitiko chinonzi "kutengeserana-kusiyana pakati pemhinduro yekukura uye kushungurudzika."
Chikwata chevaongorori kubva kuNagoya University chakawana nzira yaimbozivikanwa yekudzora kana chirimwa chichishandisa zviwanikwa zvacho mukukura kana kurarama nekushushikana. Phys.org portal. Kuwanikwa uku kunogona kubvumira kudzora kwekunetseka kwekupindura mumamiriro ekurima, kuwedzera goho ravo. Masayendisiti akaburitsa mhedzisiro yavo mujenari sainzi.
Chikwata chekutsvagisa, chinotungamirwa naProfessor Yoshikatsu Matsubayashi uye Associate Purofesa Mari Ohnishi kubva kuNagoya University Graduate Chikoro cheHupenyu Sayenzi muJapan, vakadzidza basa remahomoni uye mareceptor avo mumhinduro dzezvirimwa kushushikana.
Ivo vakatarisa kune matatu mareceptor ayo anoenderana nawo mahormone aive asati aonekwa. Vachishandisa Arabidopsis thaliana, chirimwa chidiki chinotumbuka, vakawana mhuri yePSY inoshanda sehomoni, inosunga kune aya mareceptor uye kushandura mhinduro yekushushikana mukukura uye neimwe nzira.
Kazhinji, mareceptor nemahomoni anoshanda semakiyi nemakiyi, aine hormone (munyaya iyi, peptide PSY) ichiita sekiyi inodiwa kutanga maitiro ehupenyu. Nekudaro, muchidzidzo ichi, masero ezvirimwa asina kuburitsa PSY zvisinei aive neanoshanda kunetseka kupindura. Naizvozvo, izvi zvinoratidza kuti pane kumisa mhinduro yekushushikana, kuvapo kwePSY "kiyi" mu "lock" yekugamuchira inoichengeta.
Kuti vaedze mamiriro emhinduro dzekushushikana, vaongorori vakarima zvidyarwa pasi pemamiriro ekudzvinyirira zvakanyanya vachishandisa kupisa, munyu, uye kuvatapurira mabhakitiriya. Zvirimwa zvingave zvakashomeka muPSY receptors kana kugara zvichigamuchira PSY hormone zvakatadza kupindura zvakakwana kushushikana, zvichikonzera kuderera kwekupona. Masayendisiti akagumisa kuti zvinomera zvakasimbiswa zvinomira kugadzira PSY, kusavapo kwayo kunokonzera kushushikana kwemhinduro.
Kuti utsanangure chiitiko ichi, vatsvakurudzi vakaronga nzira iyo masero akakuvadzwa anoderedza kuwanda kwemahomoni ePSY mumasero ari padyo nenzvimbo dzakakuvadzwa. Kushaikwa kwePSY uku kunokonzera mhinduro yekushushikana. Zvakakosha, izvi zvinogona kutsanangura kuti nei kunyange zvidyarwa zvakakuvadzwa zvichigona kutumira mameseji.
Panzvimbo pekushandisa hupfumi hwayo hushoma kugadzira chiratidzo chitsva, iyo yakakuvadzwa sero sero inogona kumisa kuburitswa kwePSY hormone, ichimisikidza mhinduro yekushushikana. Muchina wakadaro waizoita kuti zvikwanisike kuenzanisa kusagadzikana kwekusagadzikana nemitengo yemagetsi inobatanidzwa. Nekuda kweizvozvo, kunyangwe pasi pemamiriro ekunze anoshungurudza zvakanyanya, zvirimwa zvinokwanisa kukura nekugadzirisa zviwanikwa zvazvo zvishoma.
Mazhinji emaitiro anowanikwa muArabidopsis anowanikwa mune zvimwe zvirimwa zvakare. Naizvozvo, mhedzisiro iyi inoshanda kune ese tsika.