Abstract: An object of the present invention is to provide enhancers useful in enhancing the transcription activity of promoters. (i) A polynucleotide comprising a sequence of at least 20 consecutive nucleotides in the region of nucleotides 201 to 300 in SEQ ID NO: 1; or (ii) a polynucleotide that consists of a nucleotide sequence having at least 90% sequence identify to that of the polynucleotide (i), and has an effect to enhance promoter transcription activity, is used as an enhancer.

Abstract: An object of the present invention is to provide nucleic acids capable of imparting high-yielding ability to plants. Another object of the present invention is to use such nucleic acids to produce transgenic plants at increased yield, as well as to provide methods for increasing the yield of plants. By introducing into a plant a construct in which a promoter of a pseudo-response regulator gene in O. longistaminata and/or a structural gene of a pseudo-response regulator in a plant are operably linked, a transgenic plant is obtained that has acquired high-yielding ability.

Abstract: Isolated polynucleotides and polypeptides and recombinant DNA constructs useful for conferring drought tolerance, compositions (such as plants or seeds) comprising these recombinant DNA constructs, and methods utilizing these recombinant DNA constructs. The recombinant DNA construct comprises a polynucleotide operably linked to a promoter that is functional in a plant, wherein said polynucleotide encodes a DTP21 polypeptide.

Abstract: An object of the present invention is to provide nucleic acids capable of imparting high-yielding ability to plants. Another object of the present invention is to use such nucleic acids to produce transgenic plants at increased yield, as well as to provide methods for increasing the yield of plants. By introducing into a plant a construct in which a promoter of a pseudo-response regulator gene in O. longistaminata and/or a structural gene of a pseudo-response regulator in a plant are operably linked, a transgenic plant is obtained that has acquired high-yielding ability.

Abstract: Isolated polynucleotides and polypeptides and recombinant DNA constructs useful for conferring drought tolerance, compositions (such as plants or seeds) comprising these recombinant DNA constructs, and methods utilizing these recombinant DNA constructs. The recombinant DNA construct comprises a polynucleotide operably linked to a promoter that is functional in a plant, wherein said polynucleotide encodes a DTP21 polypeptide.

Abstract: Isolated polynucleotides and polypeptides and recombinant DNA constructs useful for conferring drought tolerance, compositions (such as plants or seeds) comprising these recombinant DNA constructs, and methods utilizing these recombinant DNA constructs. The recombinant DNA construct comprises a polynucleotide operably linked to a promoter that is functional in a plant, wherein said polynucleotide encodes a DTP21 polypeptide.

Abstract: The present invention relates to a method of evaluating multiple plant individuals or plant lines for deep rooting property under the same culture medium moisture conditions. A method of the present invention is a method of evaluating multiple plant individuals for deep rooting property under the same culture medium moisture conditions, by planting multiple plant individuals together in a sufficiently deep culture vessel and lowering the culture medium moisture content gradually. The present invention also provides a method for evaluating plants for deep rooting property, wherein a culture vessel is installed in a water tank so that the culture medium moisture content can be readily adjusted, and thus management of cultivation conditions is facile and efficient. It is possible to select a plant which can grow in dry and low-groundwater level environment efficiently, by using the method of the present invention.

Abstract: Isolated polynucleotides and polypeptides and recombinant DNA constructs useful for conferring drought tolerance, compositions (such as plants or seeds) comprising these recombinant DNA constructs, and methods utilizing these recombinant DNA constructs. The recombinant DNA construct comprises a polynucleotide operably linked to a promoter that is functional in a plant, wherein said polynucleotide encodes a DTP21 polypeptide.

Abstract: The present invention relates to a method of evaluating multiple plant individuals or plant lines for deep rooting property under the same culture medium moisture conditions. A method of the present invention is a method of evaluating multiple plant individuals for deep rooting property under the same culture medium moisture conditions, by planting multiple plant individuals together in a sufficiently deep culture vessel and lowering the culture medium moisture content gradually. The present invention also provides a method for evaluating plants for deep rooting property, wherein a culture vessel is installed in a water tank so that the culture medium moisture content can be readily adjusted, and thus management of cultivation conditions is facile and efficient. It is possible to select a plant which can grow in dry and low-groundwater level environment efficiently, by using the method of the present invention.