Fungi, Ascomycetes, Ustilaginales, Uredinales . en neighbouring cells of thesame filament by means of short outgrowths, which meet and fuse as in the VII] USTILAGIXALES 189 formation of clamp-connections (fig. 153a), or between unrelated cellsthrough a conjugation tube (fig. 153 ^)- Where basidiospores arc formedthey conjugate in a similar manner. In every case the nucleus of oneof the paired cells passes over into the other, and the two nuclei lie closetogether, though without fusion. The mycelium throughout the develop-ment of the host plant consists of binucleatc cells and breaks up in spor
![Fungi, Ascomycetes, Ustilaginales, Uredinales . en neighbouring cells of thesame filament by means of short outgrowths, which meet and fuse as in the VII] USTILAGIXALES 189 formation of clamp-connections (fig. 153a), or between unrelated cellsthrough a conjugation tube (fig. 153 ^)- Where basidiospores arc formedthey conjugate in a similar manner. In every case the nucleus of oneof the paired cells passes over into the other, and the two nuclei lie closetogether, though without fusion. The mycelium throughout the develop-ment of the host plant consists of binucleatc cells and breaks up in spor Stock Photo](https://c8.alamy.com/comp/2AN36WK/fungi-ascomycetes-ustilaginales-uredinales-en-neighbouring-cells-of-thesame-filament-by-means-of-short-outgrowths-which-meet-and-fuse-as-in-the-vii-ustilagixales-189-formation-of-clamp-connections-fig-153a-or-between-unrelated-cellsthrough-a-conjugation-tube-fig-153-where-basidiospores-arc-formedthey-conjugate-in-a-similar-manner-in-every-case-the-nucleus-of-oneof-the-paired-cells-passes-over-into-the-other-and-the-two-nuclei-lie-closetogether-though-without-fusion-the-mycelium-throughout-the-develop-ment-of-the-host-plant-consists-of-binucleatc-cells-and-breaks-up-in-spor-2AN36WK.jpg)
Image details
Contributor:
The Reading Room / Alamy Stock PhotoImage ID:
2AN36WKFile size:
7.1 MB (130.5 KB Compressed download)Releases:
Model - no | Property - noDo I need a release?Dimensions:
1876 x 1332 px | 31.8 x 22.6 cm | 12.5 x 8.9 inches | 150dpiMore information:
This image is a public domain image, which means either that copyright has expired in the image or the copyright holder has waived their copyright. Alamy charges you a fee for access to the high resolution copy of the image.
This image could have imperfections as it’s either historical or reportage.
Fungi, Ascomycetes, Ustilaginales, Uredinales . en neighbouring cells of thesame filament by means of short outgrowths, which meet and fuse as in the VII] USTILAGIXALES 189 formation of clamp-connections (fig. 153a), or between unrelated cellsthrough a conjugation tube (fig. 153 ^)- Where basidiospores arc formedthey conjugate in a similar manner. In every case the nucleus of oneof the paired cells passes over into the other, and the two nuclei lie closetogether, though without fusion. The mycelium throughout the develop-ment of the host plant consists of binucleatc cells and breaks up in spore-formation into binucleatc segments (fig. l$2a). Each young spore hasthus two nuclei which fuse during development SO that the mature brand-spore is uninucleate. In Ustilago Avenae, U. Hordei and U. Tritici, sub-species of U. Carbo, Lutman observed that on conjugation some of the cytoplasm of one of thecells passed over with the nucleus, the empty cell becoming shrivelled(fig. 154). In U. Avenae a long fusion tube is frequently formed and both. Fig- ?.?• Ustilago Carbo: a. formation of basidium;b. conjugation; c. binucleate mycelium; afterRawitscher.