Os08g0105000 - Revision history

Xysj2012: /* Structured Information */

2015-06-12T09:23:33Z

‎Structured Information

Gaoshaoxiong: /* Evolution */

2014-06-10T15:28:46Z

‎Evolution

Gaoshaoxiong: /* Function */

2014-06-10T15:19:41Z

‎Function

QingweiTian at 03:39, 8 June 2014

2014-06-08T03:39:32Z

QingweiTian at 03:38, 8 June 2014

2014-06-08T03:38:52Z

QingweiTian at 03:36, 8 June 2014

2014-06-08T03:36:53Z

QingweiTian at 03:34, 8 June 2014

2014-06-08T03:34:19Z

QingweiTian at 03:31, 8 June 2014

2014-06-08T03:31:52Z

Cqvsby: /* Function */

2014-05-31T06:31:29Z

‎Function

124.16.129.48 at 20:43, 22 July 2012

2012-07-22T20:43:13Z

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 ==Structured Information==
 [[Category:Genes]]
 [[Category:Japonica mRNA]]

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 Southeast Asia. The wild rice accession also had this allele, indicating that Ghd7-1 is probably the original wild-type allele. Ghd7-2, differing from Ghd7-1 by four amino acids, was found in varieties of temperate japonica from Japan and northern China. This allele seemed to have a smaller phenotypic effect than Ghd7-1. Ghd7-3 occurring in Teqing is distinct from all the other alleles in that it differs by three amino acids from both Ghd7-1 and Ghd7-2, with one variant amino acid found only in this variety. The phenotypic effect ofGhd7-3 seems to be the same magnitude as that of Ghd7-1 (Table 1 and Supplementary Table 4). The remaining two
 alleles (Ghd7-0 and Ghd7-0a) were nonfunctional. Ghd7-0, with the Ghd7 locus completely deleted, was found in two varieties grown as early rice in a system with two-rice crops in central and southern China, in which the growth duration for early rice is short. Ghd7-0a, resulting from a premature termination in the predicted coding region, was found in two varieties from the Heilongjiang Province of northeastern China, which has cool summers and a short growing season.
 ==Labs working on this gene==

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 Ghd7 controls heading date through its enhanced expression under long-day conditions to repress the expression of Hd3a, likely through Ehd1, thus delaying ﬂowering. Of note, the cereal VRN2 gene, although referred to as a vernalization gene, actually has a day-length control and is only expressed under long-day conditions, when it acts as a repressor of ﬂowering. VRN2 was classiﬁed in the same CCT subfamily as Ghd7. This suggests that tropical short-day plants that do not use vernalization as a ﬂowering cue, and temperate long-day plants that do use vernalization, actually use related genes to repress ﬂowering in long-day conditions. Such similarity in ﬂowering control provides important clues as to how the temperate cereals might have evolved. Moreover, these genes also act as major sources of adaptive variation, and hence are keys to understanding the spread and success of cereals. Sequence analysis of allelic variants at theGhd7 locus indicated that this locus has contributed greatly to both productivity and adaptability of cultivated rice on a global scale. Asian cultivated rice originated in tropical and subtropical regions of Asia. The functional alleles with strong effects (for example,Ghd7-1 andGhd7-3) allow rice plants to fully exploit light and temperature by delaying ﬂowering under long-day conditions in areas with long growing seasons, thus producing large panicles and increasing yield. The mutations giving rise to the Ghd7-0 and Ghd7-2 alleles, with no or reduced effect of delaying heading under long-day conditions, have had crucial roles by enabling rice to be cultivated under conditions with short growth duration and/or temperate regions. Additionally, the substantial dominant effect observed in the heterozygote between NIL(zs7) and NIL(mh7) indicated that theGhd7 locus has also contributed signiﬁcantly to the highlevel of heterosis of Shanyou 63 (refs. 19,40), a widely cultivated hybrid in China in the last more than 20 years.
 Yield has been generally regarded as a complex trait that is controlled by multiple genes of small effects. The major effects demonstrated by the NILs and transgenic plants and the cloning of this QTL have fundamental implications for yield improvement,suggesting that yield, like other traits, can also be improved by individually manipulating the component traits using both molecular marker–assisted selection and transformation.
 ===Expression===
 Expression pattern of Ghd7

← Older revision		Revision as of 03:39, 8 June 2014
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−	~~Please input one-sentence summary here.~~	+	Natural variation in Ghd7 is an important regulator of heading date and yield potential in rice

	==Annotated Information==		==Annotated Information==

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 ==Labs working on this gene==
-Please input related labs here.
+National Key Laboratory of Crop Genetic Improvement, National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China.
 ==References==
-Please input cited references here.
+[1]Xue W, Xing Y, Weng X, Zhao Y, Tang W, Wang L, Zhou H, Yu S, Xu C, Li X, Zhang Q (2008) Natural variation in Ghd7 is an important regulator of heading date and yield potential in rice. Nature Gent 40:761-767
 ==Structured Information==

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 ===Evolution===
-Please input evolution information here.
+Comparison of the predicted protein sequences identiﬁed ﬁve alleles that showed a clear geographic distribution. Ghd7-1 was found in rice varieties from the tropics, subtropics and areas with hot summers and long growing seasons, including the most popular high-yield cultivars and parents of elite hybrids in China and
+Southeast Asia. The wild rice accession also had this allele, indicating that Ghd7-1 is probably the original wild-type allele. Ghd7-2, differing from Ghd7-1 by four amino acids, was found in varieties of temperate japonica from Japan and northern China. This allele seemed to have a smaller phenotypic effect than Ghd7-1. Ghd7-3 occurring in Teqing is distinct from all the other alleles in that it differs by three amino acids from both Ghd7-1 and Ghd7-2, with one variant amino acid found only in this variety. The phenotypic effect ofGhd7-3 seems to be the same magnitude as that of Ghd7-1 (Table 1 and Supplementary Table 4). The remaining two
-You can also add sub-section(s) at will.
+alleles (Ghd7-0 and Ghd7-0a) were nonfunctional. Ghd7-0, with the Ghd7 locus completely deleted, was found in two varieties grown as early rice in a system with two-rice crops in central and southern China, in which the growth duration for early rice is short. Ghd7-0a, resulting from a premature termination in the predicted coding region, was found in two varieties from the Heilongjiang Province of northeastern China, which has cool summers and a short growing season.
 ==Labs working on this gene==

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 ===Function===
-To identify potential downstream genes regulated by
+A number of genes individually controlling number of grains per plant, heading date and plant height have been cloned recently using map-based cloning approaches. Compared with the genes reported previously, Ghd7 is notable in that it has large pleiotropic effects on an array of traits, including grain number,heading date and plant height. Such pleiotropic effects may provide an explanation for QTL hot spots that were observed in many studies.
-Ehd3, we then examined the transcript levels of seven
+CCT-domain proteins have been reported to have crucial roles in regulating processes such as photoperiodic ﬂowering, vernalization31, circadian rhythms and light signaling. The results of the present study indicate that GHD7 has a key role in photoperiod ﬂowering by regulating the putative Ehd1-Hd3a pathway. Strong
-flowering-related genes (Ehd3, RID1/OsId1/Ehd2, Ghd7,
+expression of Ghd7 in the vascular tissues of leaves is consistent with the role of CO-like genes in ﬂowering regulation. However, we also observed expression of Ghd7 in organs that may not be directly related to photoperiod-controlled ﬂowering, such as roots that do not seem to have a role in ﬂowering, leaves and meristems in the early seedling stage that are much too early for ﬂower induction, and the stems and panicles that already passed the stage of phase transition.
-OsMADS50, Ehd1, Hd3a and RFT1) by means of quantitative
+Expression in these tissues corresponded well with increases in the various organs leading to an overall increase in plant size, suggesting the possibility that this gene may have a general role in promoting growth, cell proliferation and differentiation, in addition to photoperiod ﬂowering.
-RT-PCR. Because both the wild-type plants and the ehd3
+Ghd7 controls heading date through its enhanced expression under long-day conditions to repress the expression of Hd3a, likely through Ehd1, thus delaying ﬂowering. Of note, the cereal VRN2 gene, although referred to as a vernalization gene, actually has a day-length control and is only expressed under long-day conditions, when it acts as a repressor of ﬂowering. VRN2 was classiﬁed in the same CCT subfamily as Ghd7. This suggests that tropical short-day plants that do not use vernalization as a ﬂowering cue, and temperate long-day plants that do use vernalization, actually use related genes to repress ﬂowering in long-day conditions. Such similarity in ﬂowering control provides important clues as to how the temperate cereals might have evolved. Moreover, these genes also act as major sources of adaptive variation, and hence are keys to understanding the spread and success of cereals. Sequence analysis of allelic variants at theGhd7 locus indicated that this locus has contributed greatly to both productivity and adaptability of cultivated rice on a global scale. Asian cultivated rice originated in tropical and subtropical regions of Asia. The functional alleles with strong effects (for example,Ghd7-1 andGhd7-3) allow rice plants to fully exploit light and temperature by delaying ﬂowering under long-day conditions in areas with long growing seasons, thus producing large panicles and increasing yield. The mutations giving rise to the Ghd7-0 and Ghd7-2 alleles, with no or reduced effect of delaying heading under long-day conditions, have had crucial roles by enabling rice to be cultivated under conditions with short growth duration and/or temperate regions. Additionally, the substantial dominant effect observed in the heterozygote between NIL(zs7) and NIL(mh7) indicated that theGhd7 locus has also contributed signiﬁcantly to the highlevel of heterosis of Shanyou 63 (refs. 19,40), a widely cultivated hybrid in China in the last more than 20 years.
-mutants carry a defective allele of Hd1 (Matsubara et al.,
+Yield has been generally regarded as a complex trait that is controlled by multiple genes of small effects. The major effects demonstrated by the NILs and transgenic plants and the cloning of this QTL have fundamental implications for yield improvement,suggesting that yield, like other traits, can also be improved by individually manipulating the component traits using both molecular marker–assisted selection and transformation.
 ===Expression===
 Please input expression information here.

@@ Line 3: / Line 3: @@
 ==Annotated Information==
 ===Function===
-Please input function information here.
 ===Expression===

← Older revision		Revision as of 20:43, 22 July 2012
Line 1:		Line 1:
		+	Please input one-sentence summary here.
		+
		+	==Annotated Information==
		+	===Function===
		+	Please input function information here.
		+
		+	===Expression===
		+	Please input expression information here.
		+
		+	===Evolution===
		+	Please input evolution information here.
		+
		+	You can also add sub-section(s) at will.
		+
		+	==Labs working on this gene==
		+	Please input related labs here.
		+
		+	==References==
		+	Please input cited references here.
		+
		+	==Structured Information==
	{{JaponicaGene\|		{{JaponicaGene\|
	GeneName = Os08g0105000\|		GeneName = Os08g0105000\|