PMID- 26709593 OWN - NLM STAT- MEDLINE DCOM- 20161021 LR - 20181202 IS - 1940-087X (Electronic) IS - 1940-087X (Linking) IP - 106 DP - 2015 Dec 16 TI - A Fast Air-dry Dropping Chromosome Preparation Method Suitable for FISH in Plants. PG - e53470 LID - 10.3791/53470 [doi] LID - 53470 AB - Preparation of chromosome spreads is a prerequisite for the successful performance of fluorescence in situ hybridization (FISH). Preparation of high quality plant chromosome spreads is challenging due to the rigid cell wall. One of the approved methods for the preparation of plant chromosomes is a so-called drop preparation, also known as drop-spreading or air-drying technique. Here, we present a protocol for the fast preparation of mitotic chromosome spreads suitable for the FISH detection of single and high copy DNA probes. This method is an improved variant of the air-dry drop method performed under a relative humidity of 50%-55%. This protocol comprises a reduced number of washing steps making its application easy, efficient and reproducible. Obvious benefits of this approach are well-spread, undamaged and numerous metaphase chromosomes serving as a perfect prerequisite for successful FISH analysis. Using this protocol we obtained high-quality chromosome spreads and reproducible FISH results for Hordeum vulgare, H. bulbosum, H. marinum, H. murinum, H. pubiflorum and Secale cereale. FAU - Aliyeva-Schnorr, Lala AU - Aliyeva-Schnorr L AD - Leibniz Institute of Plant Genetics and Crop Plant Research (IPK). FAU - Ma, Lu AU - Ma L AD - Leibniz Institute of Plant Genetics and Crop Plant Research (IPK); School of Biological and Chemical Sciences, Queen Mary University of London. FAU - Houben, Andreas AU - Houben A AD - Leibniz Institute of Plant Genetics and Crop Plant Research (IPK); houben@ipk-gatersleben.de. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Video-Audio Media DEP - 20151216 PL - United States TA - J Vis Exp JT - Journal of visualized experiments : JoVE JID - 101313252 RN - 0 (DNA Probes) SB - IM MH - *Chromosomes, Plant MH - DNA Probes/chemistry/genetics MH - Hordeum/chemistry/*genetics MH - In Situ Hybridization, Fluorescence/*methods MH - Secale/chemistry/*genetics PMC - PMC4694022 EDAT- 2015/12/29 06:00 MHDA- 2016/10/22 06:00 PMCR- 2017/12/16 CRDT- 2015/12/29 06:00 PHST- 2015/12/29 06:00 [entrez] PHST- 2015/12/29 06:00 [pubmed] PHST- 2016/10/22 06:00 [medline] PHST- 2017/12/16 00:00 [pmc-release] AID - 53470 [pii] AID - 10.3791/53470 [doi] PST - epublish SO - J Vis Exp. 2015 Dec 16;(106):e53470. doi: 10.3791/53470.