Sorghum tiller bud growth is repressed by contact with the overlying leaf

2019 ◽  
Vol 42 (7) ◽  
pp. 2120-2132 ◽  
Author(s):  
Ruixian Liu ◽  
Scott A. Finlayson
Keyword(s):  
Bud Growth ◽  
Tiller Bud

Growth and Development of the Wheat Tiller. II. The Dynamics of Tiller Growth

1975 ◽  
Vol 23 (5) ◽  
pp. 745 ◽  
Author(s):  
RF Williams ◽  
RHM Langer
Keyword(s):  
Negative Correlation ◽  
Growth And Development ◽  
Critical Event ◽  
Vascular Differentiation ◽  
Strong Negative Correlation ◽  
Physical Constraints ◽  
Size Dependent ◽  
Bud Growth ◽  
Time Relation ◽  
Tiller Bud

From an analysis of the length-time relation for tiller growth in wheat it was concluded that tillers which emerged traced a discontinuous curve, and that the discontinuity marked a critical event in tiller growth. Tiller buds which did not emerge as tillers continued to grow even more slowly, at least until anthesis of the primary shoot. The critical event was identified as that of escape from the cavity in which the bud was tightly contained throughout early development. The timing of vascular differentiation in tiller buds was shown to be size-dependent and there was no evidence for any correlation with the critical event of escape. A strong negative correlation between the lengths of the 3rd tiller buds and their subtending internodes was established, and the presence or absence of the 4th tiller bud was also correlated with its internode length. Current hypotheses relating to apical dominance are reviewed, and it is suggested that the dynamic physical constraints implicit in tiller bud growth add a further complication. It was concluded that hormonal, nutritional and constraint mechanisms need to be integrated as partial mechanisms which interacted at the interfaces between successive levels within apical systems.

The Positional Effects of Auxin and Cytokinin on the Regulation of Rice Tiller Bud Growth

Crop Science ◽  
2011 ◽  
Vol 51 (6) ◽  
pp. 2749-2758 ◽  
Author(s):  
Yang Liu ◽  
Yanfeng Ding ◽  
Dandan Gu ◽  
Ganghua Li ◽  
Qiangsheng Wang ◽  
...  
Keyword(s):  
Bud Growth ◽  
Positional Effects ◽  
Tiller Bud

Effects of Nitrogen and 6-Benzylaminopurine on Rice Tiller Bud Growth and Changes in Endogenous Hormones and Nitrogen

Crop Science ◽  
2011 ◽  
Vol 51 (2) ◽  
pp. 786-792 ◽  
Author(s):  
Yang Liu ◽  
Yanfeng Ding ◽  
Qiangsheng Wang ◽  
Dexuan Meng ◽  
Shaohua Wang
Keyword(s):  
Endogenous Hormones ◽  
Bud Growth ◽  
Tiller Bud

scholarly journals Effects of gibberellin and strigolactone on rice tiller bud growth

2018 ◽  
Vol 43 (3) ◽  
pp. 220-223 ◽  
Author(s):  
Shinsaku Ito ◽  
Daichi Yamagami ◽  
Tadao Asami
Keyword(s):  
Bud Growth ◽  
Tiller Bud

OsWUS promotes tiller bud growth by establishing weak apical dominance in rice

2020 ◽  
Vol 104 (6) ◽  
pp. 1635-1647
Author(s):  
Tianyu Xia ◽  
Hongqi Chen ◽  
Sujun Dong ◽  
Zeyang Ma ◽  
Haibo Ren ◽  
...  
Keyword(s):  
Apical Dominance ◽  
Bud Growth ◽  
Tiller Bud

scholarly journals The Control of Tillering in the Barley Plant II. The Control of Tiller-Bud Growth During Ear Development

1963 ◽  
Vol 16 (2) ◽  
pp. 285 ◽  
Author(s):  
D Aspinall
Keyword(s):  
Considerable Increase ◽  
Nutrient Supply ◽  
Mineral Nutrient ◽  
Barley Plant ◽  
Grain Number ◽  
High Nutrient ◽  
Bud Growth ◽  
Nitrogen Contents ◽  
High Nutrient Supply ◽  
Tiller Bud

Tho intoraction between grain number and the level of mineral nutrient supply in the control of tiller-bud elongation has been examined in two varieties of barley (cv. Pil'oline, free tillering; cv. CI. 3576, restricted tillering). It was found in Pil'oline that the level of the nutrient supply did not alter the effect of the grains, although a considerable increase in tillering at all levels of grain removal resulted from an increase in the mineral nutrient supply. In CI. 3576, on the other hand, increasing the nutrient supply decreased the influence of the grains although it required an extremely high nutrient supply to completely suppress the grain effect. The hypothesis that tillering in this variety was primarily controlled by competition between the grains and WIer buds for a limited nutrient supply was supported by an examination of the nitrogen contents of the grains and emel'ging tillers.

scholarly journals Regulation of 2,4-D Isooctyl Ester on Triticum aestivum and Aegilops tauschii Tillering and Endogenous Phytohormonal Responses

2021 ◽  
Vol 12 ◽  
Author(s):  
Haiyan Yu ◽  
Hailan Cui ◽  
Jingchao Chen ◽  
Pingping Chen ◽  
Meijing Ji ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Plant Hormone ◽  
Aegilops Tauschii ◽  
Regulatory Mechanisms ◽  
Signal Transduction Pathways ◽  
Rna Seq ◽  
Quantitative Real Time Pcr ◽  
Hormone Metabolism ◽  
Bud Growth ◽  
Tiller Bud

Tillering is an important agronomic trait essential for the yield of Triticum aestivum and the propagation of Aegilops tauschii. However, the effect of phytohormones on T. aestivum and Ae. tauschii tillering and the underlying regulatory mechanisms remain poorly understood. In the study, we found that T. aestivum and Ae. tauschii exhibited different tillering sensitivities to the auxin herbicide 2,4-D isooctyl ester. At 3 days post-application, tiller bud growth was inhibited by 77.50% in T. aestivum, corresponding to 2.0-fold greater inhibition than that in Ae. tauschii (38.71%). Transcriptome analysis showed that differentially expressed genes (DEGs) in the T. aestivum response to 2,4-D isooctyl ester were mainly enriched in plant hormone metabolism and signal transduction pathways, but similar changes were not observed in Ae. tauschii. Among that, the auxin biosynthesis and signaling induced by 2,4-D isooctyl ester was quite different between the two species. A total of nine candidate genes involved in varied tillering responses were selected from the DEGs and validated by quantitative real-time PCR. Endogenous hormone levels were assayed to further verify the RNA-seq results. After 2,4-D isooctyl ester treatment, a significant increase in abscisic acid (ABA) levels was observed in T. aestivum, whereas ABA levels were relatively stable in Ae. tauschii. The herbicide induced more cytokinin (CTK) accumulation in Ae. tauschii than in T. aestivum. External ABA clearly restricted tiller bud growth in both T. aestivum and Ae. tauschii, while 6-benzyl aminopurine had no significant effect. These results indicate that ABA and CTK may be related with 2,4-D isooctyl ester-regulated tillering differences between the two species, which will help to further understand the mechanism of the auxin-mediated regulation of tillering

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