Activité mitotique et croissance des bourgeons axillaires provoquées par la décapitation de jeunes plants de fève (Vicia faba)

1979 ◽  
Vol 57 (22) ◽  
pp. 2478-2488 ◽  
Author(s):  
Jeanne Couot-Gastelier
Keyword(s):  
Vicia Faba ◽  
Axillary Buds ◽  
Intact Plants ◽  
Terminal Bud ◽  
Vicia Faba L ◽  
Cell Layers ◽  
Cambial Zone ◽  
Bud Growth ◽  
Axillary Bud Growth

Buds of intact plants of Vicia faba L. are partially inhibited. Decapitation of the terminal bud of plants with four leaves leads to the reactivation of all the axillary buds, but to the growth of only the basal ones. The first events induced by the terminal bud excision do not occur at the level of the axillary buds, but affect rather the main axis.The kinetic study of the mitotic reactivation shows that the activation begins in cell layers of the cambial zone in the subapical internodes of the stem 1 h after decapitation and after 4 h in the more basal ones.The subapical axillary buds are first reactivated, but only temporarily, 8 h after the principal bud excision. The lower axillary buds are reactivated later, after 12 h, and their growth then becomes autonomous.These results are discussed with regard to the regulatory role of the main axis on axillary bud growth.

The Role of Humic Acid Application on Quantitative and Qualitative Traits of Faba Bean (Vicia faba L.)

2021 ◽  
Author(s):  
Samaneh Roudgarnejad ◽  
Morteza Samdeliri ◽  
Amirabas Mousavi Mirkalaei ◽  
Mojtaba Nasheai Moghaddam
Keyword(s):  
Humic Acid ◽  
Vicia Faba ◽  
Faba Bean ◽  
Qualitative Traits ◽  
Vicia Faba L ◽  
Quantitative And Qualitative Traits

Role of mature leaves in inhibition of root bud growth inEuphorbia esulaL.

Weed Science ◽  
1999 ◽  
Vol 47 (5) ◽  
pp. 544-550 ◽  
Author(s):  
David P. Horvath
Keyword(s):  
Lateral Roots ◽  
Axillary Buds ◽  
Minor Effect ◽  
Correlative Inhibition ◽  
Auxin Transport Inhibitor ◽  
Naphthylphthalamic Acid ◽  
Bud Growth ◽  
A Minor ◽  
Root Buds

Earlier studies on the source of signals controlling correlative inhibition of root buds (underground adventitious buds located on the lateral roots) inEuphorbia esulaindicated that either growing meristems (apical or axillary buds) or fully expanded leaves could prevent root buds from breaking quiescence. An investigation of the production and transport requirements of the leaf-derived signal is described. As few as three leaves remaining on budless stems greatly reduced the growth of (but not the number of growing) root buds. Also, light and CO2fixation were necessary for the leaf effects on root bud growth, but not necessary for correlative inhibition imposed by growing axillary buds. Treatment of plants with Ametryn induced root bud growth on budless plants but not on plants with intact axillary buds. The polar auxin transport inhibitor N-1-naphthylphthalamic acid prevented transmission or the signal from growing axillary buds, but it had only a minor effect on the transmission of the leaf-derived signal. Treatment of plants with gibberellic acid (GA) induced growth of root buds under otherwise noninducing conditions to some extent in all plants. However, the greatest effects of GA were on plants with intact leaves (meristemless/budless and meristemless). GA had no significant effect on root bud quiescence under conditions that induced root bud growth.

scholarly journals Transcriptomic and physiological analyses of rice seedlings under different nitrogen supplies provide insight into the regulation involved in axillary bud outgrowth

2020 ◽  
Author(s):  
Rongna Wang ◽  
Junjie Qian ◽  
Zhongming Fang ◽  
Jihua Tang
Keyword(s):  
Growth Rate ◽  
Morphological Changes ◽  
Expression Profiles ◽  
Axillary Buds ◽  
Axillary Bud ◽  
Rice Seedlings ◽  
Transcriptomic Data ◽  
Bud Growth ◽  
Axillary Bud Growth ◽  
Axillary Bud Outgrowth

Abstract Background: N is an important macronutrient required for plant development and significantly influences axillary bud outgrowth, which affects tillering and grain yields of rice. However, how different N concentrations affect axillary bud growth at the molecular and transcriptional levels remains unclear. Results: In this study, morphological changes in the axillary bud growth of rice seedlings under different N concentrations ranging from low to high levels were systematically observed. To investigate the expression of N-induced genes involved in axillary bud growth, we used RNA-seq technology to generate mRNA transcriptomic data from two tissue types, basal parts and axillary buds, of plants grown under six different N concentrations. In total, 10,221 and 12,180 DEGs induced by LN or HN supplies were identified in the basal parts and axillary buds, respectively, via comparisons to expression levels under NN level. Analysis of the coexpression modules from the DEGs of the basal parts and axillary buds revealed an abundance of related biological processes underlying the axillary bud growth of plants under N treatments. Among these processes, the activity of cell division and expansion was positively correlated with the growth rate of axillary buds of plants grown under different N supplies. Additionally, TFs and phytohormones were shown to play crucial roles in determining the axillary bud growth of plants grown under different N concentrations. Further validation of OsGS1;2 and OsGS2 , the rice mutants of which presented altered tiller numbers, validated our transcriptomic data. Conclusion: These results indicate that different N concentrations affect the axillary bud growth rate, and our study revealed comprehensive expression profiles of genes that respond to different N concentrations, providing an important resource for future studies attempting to determine how axillary bud growth is controlled by different N supplies.

دور السيلينيوم في تحمل نبات الباقلاء L.Viciafaba للإجهاد الملحي = Role of Selenium in Tolerance of Broad Bean Plant Vicia Faba L. to Salinity Stress

2017 ◽  
Vol 12 (2) ◽  
pp. 53-58
Author(s):  
أمل غانم محمود القزاز ◽  
رهف وائل محمود عطار باشي ◽  
إيمان حسين هادي الحياني
Keyword(s):  
Vicia Faba ◽  
Salinity Stress ◽  
Broad Bean ◽  
Bean Plant ◽  
Vicia Faba L

scholarly journals Transcriptomic and physiological analyses of rice seedlings under different nitrogen supplies provide insight into the regulation involved in axillary bud outgrowth

2019 ◽  
Author(s):  
Rongna Wang ◽  
Junjie Qian ◽  
Zhongming Fang ◽  
Jihua Tang
Keyword(s):  
Growth Rate ◽  
Morphological Changes ◽  
Expression Profiles ◽  
Axillary Buds ◽  
Axillary Bud ◽  
Rice Seedlings ◽  
Transcriptomic Data ◽  
Bud Growth ◽  
Axillary Bud Growth ◽  
Axillary Bud Outgrowth

Abstract Background: N is an important macronutrient required for plant development and significantly influences axillary bud outgrowth, which affects tillering and grain yields of rice. However, how different N concentrations affect axillary bud growth at the molecular and transcriptional levels remains unclear. Results: In this study, morphological changes in the axillary bud growth of rice seedlings under different N concentrations ranging from low to high levels were systematically observed. To investigate the expression of N-induced genes involved in axillary bud growth, we used RNA-seq technology to generate mRNA transcriptomic data from two tissue types, basal parts and axillary buds, of plants grown under six different N concentrations. In total, 10,221 and 12,180 DEGs induced by LN or HN supplies were identified in the basal parts and axillary buds, respectively, via comparisons to expression levels under NN level. Analysis of the coexpression modules from the DEGs of the basal parts and axillary buds revealed an abundance of related biological processes underlying the axillary bud growth of plants under N treatments. Among these processes, the activity of cell division and expansion was positively correlated with the growth rate of axillary buds of plants grown under different N supplies. Additionally, TFs and phytohormones were shown to play crucial roles in determining the axillary bud growth of plants grown under different N concentrations. Further validation of OsGS1;2 and OsGS2 , the rice mutants of which presented altered tiller numbers, validated our transcriptomic data. Conclusion: These results indicate that different N concentrations affect the axillary bud growth rate, and our study revealed comprehensive expression profiles of genes that respond to different N concentrations, providing an important resource for future studies attempting to determine how axillary bud growth is controlled by different N supplies.

The Effects of Soybean (Glycine max) Interference on the Canopy Architecture of Common Cocklebur (Xanthium strumarium), Jimsonweed (Datura stramonium), and Velvetleaf (Abutilon theophrasti)

Weed Science ◽  
1989 ◽  
Vol 37 (2) ◽  
pp. 187-195 ◽  
Author(s):  
Emilie E. Regnier ◽  
Edward W. Stoller
Keyword(s):  
Leaf Area ◽  
Shade Tolerance ◽  
Datura Stramonium ◽  
Axillary Buds ◽  
Axillary Bud ◽  
Xanthium Strumarium ◽  
Canopy Architecture ◽  
Bud Growth ◽  
Soybean Canopy ◽  
Axillary Bud Growth

Common cocklebur, jimsonweed, and velvetleaf were grown with soybeans in the field to determine how soybean interference affects weed canopy architecture. Common cocklebur had more leaves within the soybean canopy than jimsonweed or velvetleaf. At the end of the season, common cocklebur leaf area was distributed evenly below and above the top of the soybean canopy, while nearly all the jimsonweed and velvetleaf leaf area was above the soybean canopy. Common cocklebur exhibited more shade tolerance than jimsonweed or velvetleaf by also maintaining leaves in the shade within the soybean canopy. Differences among these weeds in leaf distribution within the soybean canopy were not related to differences in abscission of the lower leaves but to a differential response of lower axillary buds to soybean shading. Growth from lower axillary buds in jimsonweed and velvetleaf was strongly inhibited by soybean interference, but interference had little effect on lower axillary bud growth in common cocklebur. Axillary bud growth in the lower canopies of both common cocklebur and soybeans, and their similarity in height, caused these plants to compete for the same aboveground niche. However, common cocklebur had more extensive axillary growth along the lower stem than soybeans, which may allow it to compete for resources in this niche more aggressively than soybeans. Velvetleaf and jimsonweed did not share the same aboveground niche with soybeans due to the placement of their leaves above rather than within the soybean canopy. The lower branching characteristics and apparent shade tolerance of common cocklebur may be important factors in the superior competitive ability with soybeans compared to jimsonweed and velvetleaf.

scholarly journals Transcriptomic and physiological analyses of rice seedlings under different nitrogen supplies provide insight into the regulation involved in axillary bud outgrowth

2020 ◽  
Author(s):  
Rongna Wang ◽  
Junjie Qian ◽  
Zhongming Fang ◽  
Jihua Tang
Keyword(s):  
Growth Rate ◽  
Morphological Changes ◽  
Expression Profiles ◽  
Axillary Buds ◽  
Axillary Bud ◽  
Rice Seedlings ◽  
Transcriptomic Data ◽  
Bud Growth ◽  
Axillary Bud Growth ◽  
Axillary Bud Outgrowth

Abstract Background: N is an important macronutrient required for plant development and significantly influences axillary bud outgrowth, which affects tillering and grain yields of rice. However, how different N concentrations affect axillary bud growth at the molecular and transcriptional levels remains unclear. Results: In this study, morphological changes in the axillary bud growth of rice seedlings under different N concentrations ranging from low to high levels were systematically observed. To investigate the expression of N-induced genes involved in axillary bud growth, we used RNA-seq technology to generate mRNA transcriptomic data from two tissue types, basal parts and axillary buds, of plants grown under six different N concentrations. In total, 10,221 and 12,180 DEGs induced by LN or HN supplies were identified in the basal parts and axillary buds, respectively, via comparisons to expression levels under NN level. Analysis of the coexpression modules from the DEGs of the basal parts and axillary buds revealed an abundance of related biological processes underlying the axillary bud growth of plants under N treatments. Among these processes, the activity of cell division and expansion was positively correlated with the growth rate of axillary buds of plants grown under different N supplies. Additionally, TFs and phytohormones were shown to play crucial roles in determining the axillary bud growth of plants grown under different N concentrations. Further validation of OsGS1;2 and OsGS2 , the rice mutants of which presented altered tiller numbers, validated our transcriptomic data. Conclusion: These results indicate that different N concentrations affect the axillary bud growth rate, and our study revealed comprehensive expression profiles of genes that respond to different N concentrations, providing an important resource for future studies attempting to determine how axillary bud growth is controlled by different N supplies.

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