Okayasu Koji, Aoki Koh, Kurotani Ken-Ichi, Notaguchi Michitaka
Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan.
Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan.
Commun Integr Biol. 2021 Jan 28;14(1):21-23. doi: 10.1080/19420889.2021.1877016.
Plant grafting is generally performed between closely related species. Recently, we have discovered that species of Solanaceae show the ability to graft with distantly related plant species beyond the family. Graft adhesion with diverse angiosperms by species was probably facilitated by the secretion of a subclade of ß-1,4-glucanases. The capability of interfamily grafting was also found in the model Orobanchaceae hemiparasitic plant, , which naturally invades to the tissues of host plants of different families. Transcriptome analysis indicated that the same clade of ß-1,4-glucanase plays an important role in plant parasitism. Thus, the tissue adhesion between distant plant species occurs both naturally and artificially. Here, we further observed the capability of interfamily grafting in the stem holoparasitic genus, . These findings indicate that the natural process of tissue adhesion is a potential clue to improve plant-grafting techniques.
植物嫁接通常在亲缘关系较近的物种之间进行。最近，我们发现茄科植物能够与科外亲缘关系较远的植物物种进行嫁接。该物种与多种被子植物的嫁接黏附可能是由β-1,4-葡聚糖酶的一个亚分支的分泌促进的。在模式列当科半寄生植物中也发现了科间嫁接的能力，该植物会自然侵入不同科的寄主植物组织。转录组分析表明，同一分支的β-1,4-葡聚糖酶在植物寄生中起重要作用。因此，远缘植物物种之间的组织黏附在自然和人工条件下都会发生。在这里，我们进一步观察了茎全寄生属的科间嫁接能力。这些发现表明，组织黏附的自然过程是改进植物嫁接技术的一个潜在线索。
