TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Molecule: The desaturase molecule further defined as a molecule that desaturates fatty acid molecule at carbon 15. The molecule has 80% similarity to a fungal desaturase. The molecule comprises amino acid sequence variants generated from parental fungal desaturase. The desaturase is identified from a genus chosen from Mortierella, Neurospora, Aspergillus, Saccharomyces, Botrytis and Chlorella. The molecule having a fully defined sequence selected from a large number of amino acid sequences (more than 300) given in the specification and referenced in the claims by SEQ ID NOs: 1-331 and available in electronic form from the USPTO web site http://seqdata.uspto.gov/?pageRequest=docDetail&DocID=US20090325264A1. The molecule exhibits a percent sequence identity of greater than about 90% identity with the molecule. Preferred Polynucleotide: The polynucleotide having a fully defined sequence selected from a large number of base pair sequences (more than 300) given in the specification and referenced in the claims by SEQ ID NOs: 332-662 and available in electronic form from the USPTO web site http://seqdata.uspto.gov/?pageRequest=docDetail&DocID=US20090325264A1. The polynucleotide that, when under the control of a regulatory element, is capable of expression in a plant. The polynucleotide or its complement or fragment, comprising a nucleic acid sequence that exhibits a substantial percent sequence identity of greater than 90% to a sequence chosen from SEQ ID NO: 332-662. Preferred Construct: The construct further comprises a second polynucleotide that is transcribable, where the second transcribable polynucleotide molecule is chosen from non-coding regulatory element, selectable marker, gene encoding a second desaturase, and gene of agronomic interest. The gene of agronomic interest is a gene. Preferred Host Cell: The host cell further defined as a plant cell. Preferred Plant Cell: The plant cell is a cell of a plant chosen from Arabidopsis thaliana, Brassica napus, Brassica rapa, rapeseed, sunflower, safflower, canola, corn, soybean, cotton, flax, jojoba, Chinese tallow tree, tobacco, cocoa, peanut, fruit plants, citrus plants, and plants producing nuts, seeds and berries. ACTIVITY - Plant protectant. No biological data given.    MECHANISM OF ACTION - None given.    EXAMPLE - No suitable example given.